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Dr. Fudickar is group leader at the Division of Assistance Systems and Medical Device Technology (www.uol.de/amt) at the University of Oldenburg, Germany. Since 2015 he is heading the neuro-motoric diagnosis and therapy systems group (www.uol.de/nemo) of the Division of Assistance Systems and Medical Device Technology, which is associated with the Department of Health Services Research as part of the School of Medicine and Health Sciences, even though the teaching activity still focuses on the computer science and strong cooperations exist with the Health R+D division of the OFFIS e.V.

With the leading goal to  enhance elderlies' motor and cognitive performance via technological-supported personalized diagnostics and interventions, he aims at both, to identify causalities between cognitive and motor deficit and to enable specific resource-oriented therapy approaches.

Since the differentiation of motor, cognitive and sensory abilities is essential for a detailed evaluation of elderlies' functionality, he develops and evaluates diagnostic systems for the combined measure of motor, cognitive and sensory abilities.

His group is experienced with development, evaluation and use of motor-related (inertial and ambient) sensory and neurological measurement techniques (such as fNIRS and EEG) as well as signal processing and machine learning techniques.

Dr. Fudickar received his Phd. (Dr. rer. nat.) in 2014 and his M.Sc. degree in computer science from Potsdam University, Germany and his B.Sc. from the Hasso Plattner Institute (HPI) Potsdam, Germany. He is regularly reviewer in various journals (such as MDPI Sensors, IEEE Software and Elsevier Future Generation Computer Systems), conferences and workshops.

In addition, he is member of the VDI/VDE-GMA directive committees FA 7.29 Wearables und Big Data as well as of the Workgroup Digital Health of DNVF e.V.and the GI.

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Publikationen

  • C. Lins, D. Eckhoff, A. Klausen, S. Hellmers, A. Hein, und S. Fudickar, "Cardiopulmonary resuscitation quality parameters from motion capture data using Differential Evolution fitting of sinusoids," Applied Soft Computing, 2019.
    @article{Lins2019, title = "Cardiopulmonary resuscitation quality parameters from motion capture data using Differential Evolution fitting of sinusoids", journal = "Applied Soft Computing", year = "2019", issn = "1568-4946", doi = "https://doi.org/10.1016/j.asoc.2019.03.023", url = "http://www.sciencedirect.com/science/article/pii/S1568494619301413",
      author = "Christian Lins and Daniel Eckhoff and Andreas Klausen and Sandra Hellmers and Andreas Hein and Sebastian Fudickar", keywords = "CPR training, Resuscitation, Differential Evolution, Cardiac arrest, Motion capture, Kinect, Sinusoid regression model", abstract = "Cardiopulmonary resuscitation (CPR) is alongside electrical defibrillation the most crucial countermeasure for sudden cardiac arrest, which affects thousands of individuals every year. In this paper, we present a novel approach including sinusoid models that use skeletal motion data from an RGB-D (Kinect) sensor and the Differential Evolution (DE) optimization algorithm to dynamically fit sinusoidal curves to derive frequency and depth parameters for cardiopulmonary resuscitation training. It is intended to be part of a robust and easy-to-use feedback system for CPR training, allowing its use for unsupervised training. The accuracy of this DE-based approach is evaluated in comparison with data of 28 participants recorded by a state-of-the-art training mannequin. We optimized the DE algorithm hyperparameters and showed that with these optimized parameters the frequency of the CPR is recognized with a median error of 2.9 compressions per minute compared to the reference training mannequin." }
  • J. Bornhorst, E. Nustede, und S. Fudickar, "Mass Surveilance of C. elegans - Smartphone-Based DIY Microscope and Machine-Learning-Based Approach for Worm Detection," Sensors, vol. 19, iss. 6, p. 1468, 2019.
    @article{Bornhorst_2019, doi = {10.3390/s19061468},
      url = {https://doi.org/10.3390%2Fs19061468},
      year = 2019, month = {mar},
      publisher = {{MDPI} {AG}},
      volume = {19},
      number = {6},
      pages = {1468},
      author = {Bornhorst, Julia and Nustede, Eike and Fudickar, Sebastian },
      title = {Mass Surveilance of C. elegans - Smartphone-Based {DIY} Microscope and Machine-Learning-Based Approach for Worm Detection},
      journal = {Sensors} }
  • S. Hellmers, S. Fudickar, S. Lau, L. Elgert, R. Diekmann, J. M. Bauer, und A. Hein, "Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs," Sensors, vol. 19, iss. 6, p. 1370, 2019.
    @Article{Hellmers2019,
      author = {Hellmers, Sandra and Fudickar, Sebastian and Lau, Sandra and Elgert, Lena and Diekmann, Rebecca and Bauer, Jrgen M. and Hein, Andreas},
      TITLE = {Measurement of the Chair Rise Performance of Older People Based on Force Plates and IMUs},
      JOURNAL = {Sensors},
      VOLUME = {19},
      YEAR = {2019},
      NUMBER = {6},
      pages = {1370},
      URL = {http://www.mdpi.com/1424-8220/19/6/1370},
      ISSN = {1424-8220},
      ABSTRACT = {An early detection of functional decline with age is important to start interventions at an early state and to prolong the functional fitness. In order to assure such an early detection, functional assessments must be conducted on a frequent and regular basis. Since the five time chair rise test (5CRT) is a well-established test in the geriatric field, this test should be supported by technology. We introduce an approach that automatically detects the execution of the chair rise test via an inertial sensor integrated into a belt. The system’s suitability was evaluated via 20 subjects aged 72–89 years (78.2 ± 4.6 years) and was measured by a stopwatch, the inertial measurement unit (IMU), a Kinect® camera and a force plate. A Multilayer Perceptrons-based classifier detects transitions in the IMU data with an F1-Score of around 94.8%. Valid executions of the 5CRT are detected based on the correct occurrence of sequential movements via a rule-based model. The results of the automatically calculated test durations are in good agreement with the stopwatch measurements (correlation coefficient r = 0.93 (p < 0.001)). The analysis of the duration of single test cycles indicates a beginning fatigue at the end of the test. The comparison of the movement pattern within one person shows similar movement patterns, which differ only slightly in form and duration, whereby different subjects indicate variations regarding their performance strategies.},
      DOI = {10.3390/s19061370} }
  • B. Löffler, H. I. Stecher, S. Fudickar, D. de Sordi, F. Otto-Sobotka, A. Hein, und C. Herrmann, "Counteracting the Slowdown of Reaction Times in a Vigilance Experiment with 40-Hz Transcranial Alternating Current Stimulation," IEEE - Transactions on Neural Systems & Rehabilitation Engineering, 2018.
    @article{ALofflerBSStecherHIFudickarSdeSordiDOtto-SobotkaFHeinA2018, abstract = {Indicators for a decrement in vigilance are a slowdown in reaction times and an increase in alpha power in the electroencephalogram (EEG) in posterior regions of the brain. Transcranial alternating current stimulation (tACS) is a neuropsychological technique that has been found to interact with intrinsic brain oscillations and is able to enhance cognitive and behavioral performance. Recent studies showed that tACS in the gamma frequency range (30-80 Hz) is able to downregulate amplitudes in the alpha frequency range (8-12 Hz), in accordance to the effect referred to as cross-frequency coupling, where intrinsic alpha and gamma waves modulate each other. We applied 40 Hz gamma-tACS to the visual cortex during a vigilance experiment and investigated if stimulation improves reaction times and error rates with time-on-task. In our sham controlled experiment, participants completed two blocks of 30 minutes duration while performing the same visual two-choice task. The first block was used as BASELINE. A statistical analysis with a linear mixed model (LMM) revealed a significantly lower increase of modeled reaction times over time in the INTERVENTION-block of the tACS-group as compared to their BASELINE-block whereas there was no significant change between the BASELINE- and INTERVENTION-block for the SHAM-group. Error rates did not differ between groups. This study indicates that gamma-tACS can enhance performance in vigilance tasks as it significantly decreased the slowdown of reaction times in our study.},
      author = {L\"{o}ffler, BS and Stecher, H I and Fudickar, S and de Sordi, D and Otto-Sobotka, F and Hein, A and Herrmann, CH},
      journal = {IEEE - Transactions on Neural Systems {\&} Rehabilitation Engineering},
      title = {{Counteracting the Slowdown of Reaction Times in a Vigilance Experiment with 40-Hz Transcranial Alternating Current Stimulation}},
      year = {2018},
      url = {https://ieeexplore.ieee.org/document/8458158} }
  • C. Lins, S. Fudickar, und A. Hein, "XML Skeleton Definitions for Human Posture Assessments," Studies in Health Technology and Informatics, 2018.
    @article{Lins2018b, abstract = {In this paper, we show how the XML dialect SKAML (Skeletal Assessment Markup Language) can be used to use data from one or more Motion Capture systems to perform human posture assessments with multiple assessment methods. We show an implementation example using an inertial measuring suit and both OWAS and REBA assessment methods. SKAML makes it possible to implement classifiers for a Motion Capture system once and adapt the classifier by-configuration to various ergonomics assessment methods. We anticipate our work as help for researchers and developers that implement new assessment methods or motion capture systems.},
      author = {Lins, Christian and Fudickar, Sebastian and Hein, Andreas},
      file = {:home/s/.local/share/data/Mendeley Ltd./Mendeley Desktop/Downloaded/Lins, Fudickar, Hein - 2018 - XML Skeleton Definitions for Human Posture Assessments.pdf:pdf},
      journal = {Studies in Health Technology and Informatics},
      keywords = {Motion Capture,Musculoskeletal Disorders,OWAS,Posture Assessment,Posture Classification,REBA,SKAML,Skeleton Markup,UNIAMT,Unpublished},
      title = {{XML Skeleton Definitions for Human Posture Assessments}},
      year = {2018},
      url = {http://doi.org/10.3233/978-1-61499-896-9-225} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    C. Lins, S. Fudickar, A. Gerka, und A. Hein, "A Wearable Vibrotactile Interface for Unfavorable Posture Awareness Warning," in Proc. in Proc. 4th International Conference on Information and Communication Technologies for Ageing Well and e-Health (ICT4AWE 2018), Funchal - Madeira, Portugal, 2018.
    @inproceedings{Lins2018, abstract = {We present the concept of a vibrotactile interface with up to 13 tactors (vibration motors) that are distributed over the full body to warn industry workers when taking unfavorable postures. The developed system is to be integrated into a motion capture workwear for industry workers to serve as posture feedback system to prevent unfavorable or even harmful postures. Such postures are a risk factor for musculoskeletal disorders (MSD), especially among older adults. We evaluated the vibrotactile system with 11 subjects to identify the optimal notification vibration sequences (regarding pulse length and repetition) and the accuracy of the location-dependent perception. Results indicate that the optimal pulse length is about 150 ms and is repeated 2 or 3 times within the sequence for maximum attention.},
      address = {Funchal - Madeira, Portugal},
      author = {Lins, Christian and Fudickar, Sebastian and Gerka, Alexander and Hein, Andreas},
      booktitle = {{in Proc. 4th International Conference on Information and Communication Technologies for Ageing Well and e-Health (ICT4AWE 2018)}},
      keywords = {Ergonomics Feedback,Haptics,Informationenfehlen,Occupational Ergonomics,Posture Warning,UNIAMT,UNILLM,Unpublished,Vibrotactile Interface,Wearables},
      title = {{A Wearable Vibrotactile Interface for Unfavorable Posture Awareness Warning}},
      year = {2018},
      url = {https://scholar.google.de/scholar?cluster=96480978161803230&hl=de&as_sdt=0,5} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    C. Lins, S. Fudickar, und A. Hein, "SKAML: An XML Markup Language for Abstract Skeleton Definitions in the Context of Human Posture Assessments," in Proc. Medical Informatics Europe, Gothenburg, Sweden, 2018.
    @inproceedings{Lins2018a, abstract = {An XML-dialect for the description and configuration of abstract human skeletons for ergonomics assessments with motion capture (MoCap) systems -the Skeletal Assessment Markup Language (SKAML) -is presented. A SKAML document is the semantic description of the MoCap system and assessment method conjunction. It describes the skeletal system of a human body as a system of rigid bones and joints from a MoCap observer perspective and allows straightforward combinations of MoCap data and digitized methods for ergonomics assessments. We anticipate our work as help for researchers and developers that implement new assessment methods or MoCap systems.},
      address = {Gothenburg, Sweden},
      author = {Lins, Christian and Fudickar, Sebastian and Hein, Andreas},
      booktitle = {Medical Informatics Europe},
      file = {:home/s/.local/share/data/Mendeley Ltd./Mendeley Desktop/Downloaded/Lins, Fudickar, Hein - 2018 - SKAML An XML Markup Language for Abstract Skeleton Definitions in the Context of Human Posture Assessments.pdf:pdf},
      keywords = {Ergonomics Assessment,Informationenfehlen,Motion Capture,Musculoskeletal Disorders,Skeleton Markup,UNIAMT,UNILLM,Unpublished},
      title = {{SKAML: An XML Markup Language for Abstract Skeleton Definitions in the Context of Human Posture Assessments}},
      year = {2018},
      url ={https://www.researchgate.net/profile/Christian_Lins/publication/325596419_SKAML_An_XML_Markup_Language_for_Abstract_Skeleton_Definitions_in_the_Context_of_Human_Posture_Assessments/links/5ba9ff27a6fdccd3cb70e564/SKAML-An-XML-Markup-Language-for-Abstract-Skeleton-Definitions-in-the-Context-of-Human-Posture-Assessments.pdf} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    S. Hellmers, T. Kromke, L. Dasenbrock, A. Heinks, J. M. Bauer, A. Hein, und S. Fudickar, "Stair Climb Power Measurements via Inertial Measurement Units - Towards an Unsupervised Assessment of Strength in Domestic Environments," in Proc. Proceedings of the 11th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 5: HEALTHINF, 2018, pp. 39-47.
    @inproceedings{HellmersHeinFudickar2018, abstract = {In order to initiate interventions at an early stage of functional decline and thus, to extend independent living, the early detection of changes in functional ability is important. The Stair Climb Power Test (SCPT) is a standard test in geriatric assessments for strength as one of the essential components of functional ability. This test is also well suited for regular and frequent power measurements in daily life since the activity of climbing stairs is usually frequently performed. We introduce an automated assessment of the SCPT based on inertial measurement units (IMU) in a study of 83 participants aged 70-87 years. For power evaluations of the lower extremities, the activity of climbing stairs was automatically classified via machine learning and the power was calculated based on the test duration and covered height. Climbing stairs was correctly classified in 93% of the cases. We also achieved a good correlation of the power calculations with the conventional stop watch measurements with a mean deviation of 2.35%. The system's sensitivity to detect the transition towards frailty has been confirmed. Furthermore, we discussed the general suitability of the automated stair climb power algorithm in unsupervised, standardized home-assessments.},
      author = {{Hellmers, Sandra and Kromke, Tobias and Dasenbrock, Lena and Heinks, Andrea and Bauer, J{\"{u}}rgen M. and Hein, Andreas and Fudickar, Sebastian}},
      booktitle = {Proceedings of the 11th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 5: HEALTHINF},
      doi = {10.5220/0006543900390047},
      keywords = {UNIAMT,accepted,full paper},
      mendeley-tags = {UNIAMT,accepted,full paper},
      pages = {39--47},
      title = {{Stair Climb Power Measurements via Inertial Measurement Units - Towards an Unsupervised Assessment of Strength in Domestic Environments}},
      year = {2018},
      url = {http://www.scitepress.org/DigitalLibrary/Link.aspx?doi=10.5220/0006543900390047} }
  • S. Hellmers, B. Izadpanah, L. Dasenbrock, R. Diekmann, J. M. Bauer, A. Hein, und S. Fudickar, "Towards an Automated Unsupervised Mobility Assessment for Older People Based on Inertial TUG Measurements," Sensors, vol. 18, iss. 10, 2018.
    @article{AHellmers2018, abstract = {One of the most common assessments for the mobility of older people is the Timed Up and Go test (TUG). Due to its sensitivity regarding the indication of Parkinson's disease (PD) or increased fall risk in elderly people, this assessment test becomes increasingly relevant, should be automated and should become applicable for unsupervised self-assessments to enable regular examinations of the functional status. With Inertial Measurement Units (IMU) being well suited for automated analyses, we evaluate an IMU-based analysis-system, which automatically detects the TUG execution via machine learning and calculates the test duration. as well as the duration of its single components. The complete TUG was classified with an accuracy of 96% via a rule-based model in a study with 157 participants aged over 70 years. A comparison between the TUG durations determined by IMU and criterion standard measurements (stopwatch and automated/ambient TUG (aTUG) system) showed significant correlations of 0.97 and 0.99, respectively. The classification of the instrumented TUG (iTUG)-components achieved accuracies over 96%, as well. Additionally, the system's suitability for self-assessments was investigated within a semi-unsupervised situation where a similar movement sequence to the TUG was executed. This preliminary analysis confirmed that the self-selected speed correlates moderately with the speed in the test situation, but differed significantly from each other.},
      author = {Hellmers, Sandra and Izadpanah, Babak and Dasenbrock, Lena and Diekmann, Rebecca and Bauer, J{\"{u}}rgen M and Hein, Andreas and Fudickar, Sebastian},
      doi = {10.3390/s18103310},
      file = {:home/s/.local/share/data/Mendeley Ltd./Mendeley Desktop/Downloaded/Hellmers et al. - 2018 - Towards an Automated Unsupervised Mobility Assessment for Older People Based on Inertial TUG Measurements.pdf:pdf},
      issn = {1424-8220},
      journal = {Sensors},
      number = {10},
      title = {{Towards an Automated Unsupervised Mobility Assessment for Older People Based on Inertial TUG Measurements}},
      url = {http://www.mdpi.com/1424-8220/18/10/3310},
      volume = {18},
      year = {2018} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    N. Volkening, A. Unni, S. Becker, J. W. Rieger, S. Fudickar, und A. Hein, "Development of a Mobile Functional Near-infrared Spectroscopy Prototype and its Initial Evaluation: Lessons Learned," in Proc. Proceedings of the 11th PErvasive Technologies Related to Assistive Environments Conference on - PETRA '18, 2018, pp. 214-221.
    @inproceedings{Volkening2018d, abstract = {This paper presents a new mobile near-infrared functional spectroscopy (fNIRS) device, with digital detectors that can be placed anywhere on the head and fit into standard caps to measure cortical brain activation. The device's functionality was evaluated in two steps, i.e. first, by means of simple pulse measurements and second, in a motor cortex study with nine subjects. In this study, the subjects had to alternate between right and left hands while using hand-held strength trainers. While the signals from the mobile prototype were not yet stable enough across all channels to perform analysis such as statistical parametric mapping, it was able to measure significant brain activation changes over the area of the motor cortex with the mobile prototype when the contralateral hand was activated in four subjects. In contrast, the device was yet unable to measure ipsilateral activities. The problems encountered and possible methods to improve signal acquisition are discussed at the end of the paper.},
      author = {Volkening, Nils and Unni, Anirudh and Becker, Sabeth and Rieger, Jochem W and Fudickar, Sebastian and Hein, Andreas},
      doi = {https://doi.org/10.1145/3197768.3201534},
      keywords = {AMTCSE,AMTUNI,accepted,fnirs,full paper,functional near-infrared spectroscopy,is a non-invasive,method for the imaging,mobile fnirs,motor cortical activity,of the central nervous,prototype,system and is used},
      title = {{Development of a Mobile Functional Near-infrared Spectroscopy Prototype and its Initial Evaluation: Lessons Learned}},
      booktitle = {Proceedings of the 11th PErvasive Technologies Related to Assistive Environments Conference on - PETRA '18},
      isbn = {9781450363907},
      pages = {214--221},
      publisher = {ACM Press},
      url = {http://dl.acm.org/citation.cfm?doid=3197768.3201534},
      year = {2018} }
  • S. Fudickar, J. Kiselev, T. Frenken, S. Wegel, S. Dimitrowska, E. Steinhagen-Thiessen, und A. Hein, "Validation of the ambient TUG chair with light barriers and force sensors in a clinical trial," Assistive Technology, iss. ja, 2018.
    @article{AFudickar10.1080/10400435.2018.1446195,
      author = { Fudickar, Sebastian and Kiselev, J{\"{o}}rn and Frenken, Thomas and Wegel, Sandra and Dimitrowska, Slavica and Steinhagen-Thiessen, Elisabeth and Hein, Andreas },
      title = {Validation of the ambient TUG chair with light barriers and force sensors in a clinical trial},
      journal = {Assistive Technology},
      volume = {0},
      number = {ja},
      pages = {null},
      year = {2018},
      publisher = {Taylor & Francis},
      doi = {10.1080/10400435.2018.1446195},
      note ={PMID: 29482463},
      URL = {https://doi.org/10.1080/10400435.2018.1446195},
      eprint = {https://doi.org/10.1080/10400435.2018.1446195},
      abstract = {ABSTRACTIntroduction. To initiate appropriate interventions and avoid physical decline, comprehensive measurements are needed to detect functional changes in elderly people at the earliest possible stage. The established Timed Up\&Go (TUG) test takes little time and, due to its standardized and easy procedure, can be conducted by elderly people in their own homes without clinical guidance. Therefore, cheap light barriers and force sensors are well suited ambient sensors that could easily be attached to existing (arm)chairs to measure and report TUG times in order to identify functional decline.Methods. We validated the sensitivity of these sensors in a clinical trial with 100 elderlies aged 58-92 with a mean of 74 (6.78) years by comparing the sensor-based results with standard TUG measurements using a stopwatch. We further evaluated the accuracy-enhancement when calibrating the algorithm via a mixed linear model.Results. With calibration, the light barriers achieved a Root Mean Square Error of 0.83s, compared to 1.90s without, and the force sensors achieved 0.90s compared to 2.12s, respectively. Discussion. The suitability of measuring accurate TUG times with each of the ambient sensors and of measuring TUG regularly in the homes of elderly people could be confirmed. } }
  • S. Fudickar, C. Stolle, N. Volkening, und A. Hein, "Scanning Laser Rangefinders for the Unobtrusive Monitoring of Gait Parameters in Unsupervised Settings," Sensors, vol. 18, iss. 10, p. 3424, 2018.
    @article{AFudickar2018, abstract = {Since variations in common gait parameters (such as cadence, velocity and stride-length) of elderly people are a reliable indicator of functional and cognitive decline in aging and increased fall risks, such gait parameters have to be monitored continuously to enable preventive interventions as early as possible. With scanning laser rangefinders (SLR) having been shown to be suitable for standardised (frontal) gait assessments, this article introduces an unobtrusive gait monitoring (UGMO) system for lateral gait monitoring in homes for the elderly. The system has been evaluated in comparison to a GAITRite (as reference system) with 86 participants (ranging from 21 to 82 years) passing the 6-min walk test twice. Within the considered 56,351 steps within an overall 7877 walks and approximately 34 km distance travelled, it has been shown that the SLR Hokuyo UST10-LX is more sensitive than the cheaper URG-04LX version in regard to the correct (automatic) detection of lateral steps (98% compared to 77%) and walks (97% compared to 66%). Furthermore, it has been confirmed that the UGMO (with the SLR UST10-LX) can measure gait parameters such as gait velocity and stride length with sufficient sensitivity to determine age- and disease-related functional (and cognitive) decline.},
      author = {Fudickar, Sebastian and Stolle, Christian and Volkening, Nils and Hein, Andreas},
      doi = {10.3390/s18103424},
      file = {:home/s/.local/share/data/Mendeley Ltd./Mendeley Desktop/Downloaded/Fudickar et al. - 2018 - Scanning Laser Rangefinders for the Unobtrusive Monitoring of Gait Parameters in Unsupervised Settings.pdf:pdf},
      journal = {Sensors},
      month = {oct},
      number = {10},
      pages = {3424},
      publisher = {Multidisciplinary Digital Publishing Institute},
      title = {{Scanning Laser Rangefinders for the Unobtrusive Monitoring of Gait Parameters in Unsupervised Settings}},
      url = {http://www.mdpi.com/1424-8220/18/10/3424},
      volume = {18},
      year = {2018} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    S. Hellmers, S. Fudickar, L. Dasenbrock, A. Heinks, J. M. Bauer, und A. Hein, "A Model-Based Approach for Jump Analyses Regarding Strength and Balance," in Proc. Biomedical Engineering Systems and Technologies, Cham, 2018, pp. 354-375.
    @inproceedings{HellmersSandra2018, abstract = {To identify the functional decline as related to aging, geriatric assessments are an established instrument. Within such assessments, the functional ability is evaluated and consists of the three major components: strength, mobility, and balance. Counter movement jumps (CMJ) are well-suited to test these three essential elements of functional ability within a single assessment item. Since common balance measures have been shown to be significantly prone to algorithmic and technical variations, a robust alternative method is required. Thus, we introduce a model-based approach for balance and strength analyses, where the human lower extremities are modeled as an oscillating system during the phase of landing and recovery after a vertical jump. In the System and Control Technology, a transfer function of an oscillating system is described by a second-order delay element (PT2-element), which is characterized by the parameters natural frequency and damping. We analyze the jumps of 30 participants (70-87 years) regarding their jump phases and the mentioned parameters. A linear correlation between jump power and jump height, which are sensitive indicators of the muscle performance and the strength could be confirmed. While a correlation between jump power and spring constant could be observed, a significant relationship between the balance ability and natural frequency could not be identified.},
      address = {Cham},
      author = {Hellmers, Sandra and Fudickar, Sebastian and Dasenbrock, Lena and Heinks, Andrea and Bauer, J{\"{u}}rgen M. and Hein, Andreas},
      booktitle = {Biomedical Engineering Systems and Technologies},
      doi = {10.1007/978-3-319-94806-5_19},
      editor = {{Peixoto Nathalia} and and Silveira, Margarida and {and Ali Hesham H.} and {and Maciel Carlos} and {and van den Broek Egon L}},
      file = {:home/s/.local/share/data/Mendeley Ltd./Mendeley Desktop/Downloaded/Hellmers Sandra et al. - 2018 - A Model-Based Approach for Jump Analyses Regarding Strength and Balance.pdf:pdf},
      isbn = {978-3-319-94806-5},
      keywords = {UNIAMT,accepted,full paper},
      pages = {354--375},
      publisher = {Springer International Publishing},
      title = {{A Model-Based Approach for Jump Analyses Regarding Strength and Balance}},
      url = {http://doi.org/10.1007/978-3-319-94806-5_19},
      year = {2018} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    C. Lins, A. Klausen, S. Fudickar, S. Hellmers, M. Lipprandt, R. Röhrig, und A. Hein, "Determining Cardiopulmonary Resuscitation Parameters with Differential Evolution Optimization of Sinusoidal Curves," in Proc. Proceedings of the 11th International Joint Conference on Biomedical Engineering Systems and Technologies, Funchal - Madeira, Portugal, 2018, pp. 665-670.
    @inproceedings{Lins2018c, abstract = {In this paper, we present a robust sinusoidal curve fitting method based on the Differential Evolution (DE) algorithm for determining cardiopulmonary resuscitation (CPR) parameters – naming chest compression fre-quency and depth – from skeletal motion data. Our implementation uses skeletal data from the RGB-D (RGB + Depth) Kinect v2 sensor and works without putting non-sensor related constraints such as specific view an-gles or distance to the system. Our approach is intended to be part of a robust and easy-to-use feedback system for CPR training, allowing its unsupervised training. We compare the sensitivity of our DE implementation with data recorded by a Laerdal Resusci Anne mannequin. Results show that the frequency of the DE-based CPR is recognized with a variance of ±4.4 bpm (4.1{\%}) in comparison to the reference of the Resusci Anne mannequin.},
      address = {Funchal - Madeira, Portugal},
      author = {Lins, Christian and Klausen, Andreas and Fudickar, Sebastian and Hellmers, Sandra and Lipprandt, Myriam and R{\"{o}}hrig, Rainer and Hein, Andreas},
      booktitle = {Proceedings of the 11th International Joint Conference on Biomedical Engineering Systems and Technologies},
      doi = {10.5220/0006732806650670},
      file = {:C$\backslash$:/Users/NilsV/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Lins et al. - 2018 - Determining Cardiopulmonary Resuscitation Parameters with Differential Evolution Optimization of Sinusoidal Curves.pdf:pdf},
      isbn = {978-989-758-281-3},
      keywords = {CPR Training,Cardiac Massage,Curve Fitting,Evolutionary Algorithm,UNIAMT,UNILLM},
      mendeley-tags = {UNIAMT,UNILLM},
      pages = {665--670},
      publisher = {SCITEPRESS - Science and Technology Publications},
      title = {{Determining Cardiopulmonary Resuscitation Parameters with Differential Evolution Optimization of Sinusoidal Curves}},
      url = {http://www.scitepress.org/DigitalLibrary/Link.aspx?doi=10.5220/0006732806650670},
      year = {2018} }
  • S. Blum, S. Debener, R. Emkes, N. Volkening, S. Fudickar, und M. G. Bleichner, "EEG Recording and Online Signal Processing on Android: A Multiapp Framework for Brain-Computer Interfaces on Smartphone," BioMed Research International Hindawi, vol. 2017, p. 12, 2017.
    @article{Blum2017, abstract = {Objective. Our aim was the development and validation of a modular signal processing and classification application enabling online electroencephalography (EEG) signal processing on off-the-shelf mobile Android devices. The software application SCALA (Signal ProCessing and CLassification on Android) supports a standardized communication interface to exchange information with external software and hardware. Approach. In order to implement a closed-loop brain-computer interface (BCI) on the smartphone, we used a multiapp framework, which integrates applications for stimulus presentation, data acquisition, data processing, classification, and delivery of feedback to the user. Main Results. We have implemented the open source signal processing application SCALA. We present timing test results supporting sufficient temporal precision of audio events. We also validate SCALA with a well-established auditory selective attention paradigm and report above chance level classification results for all participants. Regarding the 24-channel EEG signal quality, evaluation results confirm typical sound onset auditory evoked potentials as well as cognitive event-related potentials that differentiate between correct and incorrect task performance feedback. Significance. We present a fully smartphone-operated, modular closed-loop BCI system that can be combined with different EEG amplifiers and can easily implement other paradigms.},
      author = {Blum, Sarah and Debener, Stefan and Emkes, Reiner and Volkening, Nils and Fudickar, Sebastian and Bleichner, Martin G},
      doi = {10.1155/2017/3072870},
      journal = {BioMed Research International Hindawi},
      pages = {12},
      title = {{EEG Recording and Online Signal Processing on Android: A Multiapp Framework for Brain-Computer Interfaces on Smartphone}},
      url = {https://www.hindawi.com/journals/bmri/2017/3072870/},
      volume = {2017},
      year = {2017} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    S. Hellmers, E. Steen, L. Dasenbrock, A. Heinks, J. M. Bauer, S. Fudickar, und A. Hein, "Towards a minimized unsupervised technical assessment of physical performance in domestic environments," in Proc. Proceedings of the 11th EAI International Conference on Pervasive Computing Technologies for Healthcare - PervasiveHealth '17, New York, New York, USA, 2017, pp. 207-216.
    @inproceedings{Hellmers2017a, abstract = {Early detection of changes in mobility associated with functional decline can increase the therapeutic success by prolonging self-determined living. To get an unbiased and high frequently status of the physical performance of the persons at risk, unsupervised assessments of their functional abilities should ideally take place in their homes.$\backslash$r$\backslash$nThus, we have developed a minimized unsupervised technical assessment of physical performance in domestic environments.$\backslash$r$\backslash$nBy conducting an exploratory factor analysis, based on the results of 79 study participants with a minimum age of 70 years, we could clarify that common assessment items mainly represent three key parameters of functional performance$\backslash$r$\backslash$nmobility and endurance, strength and balance. Consequently, we identified a minimal set of assessment items that is suitable for home-assessments and that, since covering all three parameters, is able to generate clinical meaningful and relevant insights about the functional status. Regarding the parameter mobility, we developed a technical assessment of physical performance for domestic environments, which utilizes short distance walk times assessed via ambient presence sensors as an indicator for potential functional decline. In a field trial over ten months with 20 participants with a mean age of 84.25 years, we could confirm the general feasibility of our approach and the proposed system.},
      address = {New York, New York, USA},
      author = {Hellmers, Sandra and Steen, Enno-Edzard and Dasenbrock, Lena and Heinks, Andrea and Bauer, J{\"{u}}rgen M. and Fudickar, Sebastian and Hein, Andreas},
      booktitle = {Proceedings of the 11th EAI International Conference on Pervasive Computing Technologies for Healthcare - PervasiveHealth '17},
      doi = {10.1145/3154862.3154882},
      isbn = {9781450363631},
      pages = {207--216},
      publisher = {ACM Press},
      title = {{Towards a minimized unsupervised technical assessment of physical performance in domestic environments}},
      url = {http://dl.acm.org/citation.cfm?doid=3154862.3154882},
      year = {2017} }
  • [incollection] bibtex | Dokument aufrufen Dokument aufrufen
    S. Fudickar, M. Isken, J. Fleßner, N. Volkening, E. Steen, und A. Hein, "Gesture controlled hospital beds for home care," in Ambient Assisted Living 9. AAL-Kongress, Frankfurt/M, Germany, April 20 - 21, 2016, Reiner Wichert, B. M., Ed., Springer International Publishing, 2017, pp. 103-118.
    @incollection{Fudickar2016AAL, abstract = {This article introduces a gesture-based user interface for hospi-tal beds that enables caregivers to focus on their patients and interact with them with both hands during mobilizing or transferring them. Gestures are detected either via static (96{\%} sensitivity) or dynamic gestures (67.5 {\%} sensitivity) and might be corrected by an extra repetition. Once gestures are correctly detected, caregivers can trigger bed movements via a foot switch as a hands-free operation, which as well functions as a dead man button. The evaluation of the usability through interviews with caregivers highlighted the system's general applicability, but as well some future challenges that have to be solved in order to achieve a system for every-day use.},
      annote = {(in press)},
      author = {Fudickar, Sebastian and Isken, Melvin and Fle{\ss}ner, Jannik and Volkening, Nils and Steen, Enno-Edzard and Hein, Andreas},
      booktitle = {Ambient Assisted Living 9. AAL-Kongress, Frankfurt/M, Germany, April 20 - 21, 2016},
      doi = {10.1007/978-3-319-52322-4},
      editor = {{Reiner Wichert},
      Beate Mand},
      isbn = {978-3-319-52322-4},
      pages = {103--118},
      publisher = {Springer International Publishing},
      title = {{Gesture controlled hospital beds for home care}},
      url = {http://link.springer.com/chapter/10.1007/978-3-319-52322-4{\_}7/fulltext.html},
      year = {2017} }
  • [incollection] bibtex | Dokument aufrufen Dokument aufrufen
    S. Hellmers, S. Fudickar, C. Büse, L. Dasenbrock, A. Heinks, J. M. Bauer, und A. Hein, "Technology Supported Geriatric Assessment," in Ambient Assisted Living: 9. AAL-Kongress, Frankfurt/M, Germany, April 20 - 21, 2016, Wichert, R. und Mand, B., Eds., Cham: Springer International Publishing, 2017, pp. 85-100.
    @incollection{Hellmers2017c, abstract = {Healthy aging is a core societal aim especially regarding the demographic change. But with aging, functional decline can occur and this is a major challenge for health care systems. For the evaluation of the health of older adults and the identification of early changes associated with functional and cognitive decline, clinical geriatric assessments are a well-established approach. Ideally, the assessments should take place at home of the older adults or even in their daily life, to get an unbiased functional status. Therefore, we introduce a technology supported geriatric assessment as an intermediate step to a home-assessment or in future to sensor-based-assessments in daily life. Beside various ambient sensors, a sensor belt is used during the assessments and for 1 week in the participants' daily life. We discuss the suitability of our measuring devices for an ambient home-assessment and evaluate the sensors in comparison to valid measurements. Thereby, we show that light barrier measurements achieve a high sensitivity and a good correlation to manual measurements through study nurses or physical therapists.},
      address = {Cham},
      author = {Hellmers, Sandra and Fudickar, Sebastian and B{\"{u}}se, Clemens and Dasenbrock, Lena and Heinks, Andrea and Bauer, J{\"{u}}rgen M. and Hein, Andreas},
      booktitle = {Ambient Assisted Living: 9. AAL-Kongress, Frankfurt/M, Germany, April 20 - 21, 2016},
      doi = {10.1007/978-3-319-52322-4_6},
      editor = {Wichert, Reiner and Mand, Beate},
      isbn = {978-3-319-52322-4},
      pages = {85--100},
      publisher = {Springer International Publishing},
      title = {{Technology Supported Geriatric Assessment}},
      url = {http://dx.doi.org/10.1007/978-3-319-52322-4{\_}6 http://link.springer.com/10.1007/978-3-319-52322-4{\_}6},
      year = {2017} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    S. Hellmers, S. Fudickar, E. Lange, C. Lins, und A. Hein, "Validation of a motion capture suit for clinical gait analysis," in Proc. Proceedings of the 11th EAI International Conference on Pervasive Computing Technologies for Healthcare - PervasiveHealth '17, New York, New York, USA, 2017, pp. 120-126.
    @inproceedings{Hellmers2017b, abstract = {Gait analysis is often supported by technology. Due to limitations in optical systems, such as limited measurement volumes and the requirement of a laboratory environment, low-cost inertial measurement unit (IMU) based motion capture system might be better suited for gait analysis since they involve no spatial limitations and are flexible applicable. In this paper we investigate, if a low-cost IMU-based motion capture suits are an adequate alternative for clinical gait analysis in terms of accuracy of the determination of joint flexions and gait parameters. For this reason, we developed a gait analysis system and a gait analysis algorithm, which detects joint positions based on the Joint Coordinate System and determines knee, hip, and ankle flexions, as well as spatiotemporal parameters such as the number of steps, cadence, step duration and step length, and the specific gait phases. We evaluated and validated the IMU-based system in comparison to camera-based measurements (as gold standard) with three different healthy adult subjects. The evaluation indicates that the full-body motion capture system achieves a high degree of precision (0.86) and recall (0.98) in the recognition of gait cycles. The harmonic mean F(0.15) of the two factors precision and recall is on average 0.96 and the mentioned temporal gait parameters can be determined with an error below 10 ms. The mean derivation in the determination of joint angles amounts 1.35+-2°. Consequently, the article at hand indicates that low-cost IMU-based motion capture suits are an accurate alternative for gait analysis.},
      address = {New York, New York, USA},
      author = {Hellmers, Sandra and Fudickar, Sebastian and Lange, Eugen and Lins, Christian and Hein, Andreas},
      booktitle = {Proceedings of the 11th EAI International Conference on Pervasive Computing Technologies for Healthcare - PervasiveHealth '17},
      doi = {10.1145/3154862.3154884},
      file = {:C$\backslash$:/Users/NilsV/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Hellmers et al. - 2017 - Validation of a Motion Capture Suit for Clinical Gait Analysis.pdf:pdf},
      isbn = {9781450363631},
      pages = {120--126},
      publisher = {ACM Press},
      title = {{Validation of a motion capture suit for clinical gait analysis}},
      url = {http://dl.acm.org/citation.cfm?doid=3154862.3154884},
      year = {2017} }
  • [incollection] bibtex | Dokument aufrufen Dokument aufrufen
    S. Fudickar, M. Isken, J. Fleßner, N. Volkening, E. Steen, und A. Hein, "Gesture controlled hospital beds for home care," in Ambient Assisted Living 9. AAL-Kongress, Frankfurt/M, Germany, April 20 - 21, 2016, Reiner Wichert, B. M., Ed., Springer International Publishing, 2017, pp. 103-118.
    @incollection{Fudickar2017AAL, abstract = {This article introduces a gesture-based user interface for hospi-tal beds that enables caregivers to focus on their patients and interact with them with both hands during mobilizing or transferring them. Gestures are detected either via static (96{\%} sensitivity) or dynamic gestures (67.5 {\%} sen-sitivity) and might be corrected by an extra repetition. Once gestures are correctly detected, caregivers can trigger bed movements via a foot switch as a hands-free operation, which as well functions as a dead man button. The evaluation of the usability through interviews with caregivers highlighted the system's general applicability, but as well some future challenges that have to be solved in order to achieve a system for every-day use.},
      annote = {(in press)},
      author = {Fudickar, Sebastian and Isken, Melvin and Fle{\ss}ner, Jannik and Volkening, Nils and Steen, Enno-Edzard and Hein, Andreas},
      booktitle = {Ambient Assisted Living 9. AAL-Kongress, Frankfurt/M, Germany, April 20 - 21, 2016},
      doi = {10.1007/978-3-319-52322-4},
      editor = {{Reiner Wichert},
      Beate Mand},
      file = {:C$\backslash$:/Users/NilsV/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Fudickar et al. - 2017 - Gesture controlled hospital beds for home care.pdf:pdf;:C$\backslash$:/Users/NilsV/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Fudickar et al. - 2017 - Gesture controlled hospital beds for home care(2).pdf:pdf},
      isbn = {978-3-319-52322-4},
      pages = {103--118},
      publisher = {Springer International Publishing},
      title = {{Gesture controlled hospital beds for home care}},
      url = {http://link.springer.com/chapter/10.1007/978-3-319-52322-4{\_}7/fulltext.html},
      year = {2017} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    S. Hellmers, S. Fudickar, L. Dasenbrock, A. Heinks, J. M. Bauer, und A. Hein, "Understanding Jump Landing as an Oscillating System: A Model-based Approach of Balance and Strength Analyses," in Proc. Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies, Porto, 2017, pp. 159-168.
    @inproceedings{Hellmers2017, abstract = {Counter movement jumps (CMJ) are well-suited to measure the muscle power and balance. Since it has been clarified that well accepted CMJ amplification-based balance measures (such as TTS or CoP) are significantly influenced by algorithmic and measurement settings and thus, measurement results have limited meaningfulness among force platforms, we introduce a new model-based approach measuring the postural stability. In this, during the landing and recovery phases after vertical jumps, the lower extremities can be represented by an oscillating system and the corresponding transfer function is described by a second-order delay (PT2) element. In an initial prospective study with 20 subjects aged over 70 years, we observed an inverse relationship between the natural frequency and the jump height and could also identify an influence of sex, and body weight on the jump height. Furthermore, we also found a strong relation between natural frequency and dynamic postural stability index (DPSI), even though these results must be statistically ensured statistically using a larger cohort, due to the current limited number of subjects. Nevertheless, we could confirm the general applicability of the Systems and Control Technology perspective on describing human movements in a potentially more robust manner than current amplification based approaches.},
      address = {Porto},
      author = {Hellmers, Sandra and Fudickar, Sebastian and Dasenbrock, Lena and Heinks, Andrea and Bauer, J{\"{u}}rgen M. and Hein, Andreas},
      booktitle = {Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies},
      doi = {10.5220/0006171101590168},
      file = {:C$\backslash$:/Users/NilsV/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Hellmers et al. - 2017 - Understanding the Jump Landing as an Oscillating System A Model-based Approach of Balance and Strength Analyzes.pdf:pdf},
      isbn = {978-989-758-213-4},
      keywords = {UNIAMT,accepted,full paper},
      mendeley-tags = {UNIAMT,accepted,full paper},
      pages = {159--168},
      publisher = {SCITEPRESS - Science and Technology Publications},
      title = {{Understanding Jump Landing as an Oscillating System: A Model-based Approach of Balance and Strength Analyses}},
      url = {http://www.scitepress.org/DigitalLibrary/PublicationsDetail.aspx?ID=HGfliCWA5Hs{\%}3D http://www.scitepress.org/DigitalLibrary/Link.aspx?doi=10.5220/0006171101590168},
      year = {2017} }
  • [inproceedings] bibtex
    N. Volkening, A. Unni, B. S. Löffler, S. Fudickar, J. W. Rieger, und A. Hein, "Characterizing the Influence of Muscle Activity in fNIRS Brain Activation Measurements," in Proc. IFAC-PapersOnLine, 2016, pp. 84-88.
    @inproceedings{Volkening2016, abstract = {Driving is a complex and cognitively demanding task. It is essential to assess the cognitive state of the driver in order to design cognitive technical systems that can adapt to different driver cognitive states. Our research attempts to assess these states using functional Near Infrared Spectroscopy (fNIRS) by measuring brain activity in a virtual reality driving simulator. However, the fNIRS brain activation measurements could be influenced by muscle activity and we wanted to investigate this phenomenon. For this, we designed a paradigm with two conditions (listen, teeth clench) which show a significant contrast in the influence of muscle activity. We observed that the muscle hemodynamic response can show a higher magnitude of signal change compared to brain hemodynamic response. The muscle hemodynamic response showed an increase in deoxygenated hemoglobin (HbR) whereas the brain hemodynamic response showed a decrease in HbR. Moreover, the dynamics of the brain and muscle hemodynamic response differed. The brain response showed the same latency for oxygenated hemoglobin (HbO) and HbR while the muscle HbR response had a slower latency compared to HbO. We concluded that the fNIRS brain activation measurements could indeed be influenced by muscle activity. We were also able to determine some characteristics of the muscle hemodynamic response.},
      author = {Volkening, Nils and Unni, Anirudh and L{\"{o}}ffler, Birte Sofie and Fudickar, Sebastian and Rieger, Jochen W and Hein, Andreas},
      booktitle = {IFAC-PapersOnLine},
      doi = {10.1016/j.ifacol.2016.08.013},
      issn = {24058963},
      mendeley-tags = {OFFIS=G-AIT/AHT/CSE},
      number = {11},
      pages = {84--88},
      title = {{Characterizing the Influence of Muscle Activity in fNIRS Brain Activation Measurements}},
      volume = {49},
      year = {2016} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    B. S. Löffler, S. Fudickar, C. S. Herrmann, und A. Hein, "Ein Blick in das Gehirn: Messung und Verbesserung der Fahrleistung älterer Autofahrender mit Hilfe von Neuroimaging und Elektrostimulation," in Proc. Trends in Neuroergonomics, Berlin, 2015, pp. 166-169.
    @inproceedings{bwmms15, abstract = {In diesem Beitrag wird ein Forschungsansatz vorgestellt, der es {\"{a}}lteren Autofahrern erm{\"{o}}glichen soll, bis in ein sehr hohes Alter ihre Fahrleistung zu erhalten. Motivation ist die, aufgrund des demografischen Wandels zu erwartende zuk{\"{u}}nftige hohe Zahl {\"{a}}lterer Autofahrer. Trotz des erh{\"{o}}hten Unfallrisikos ist in Deutschland keine regelm{\"{a}}{\ss}ige {\"{U}}berpr{\"{u}}fung der Fahreignung dieser Gruppe vorgesehen – bem{\"{a}}ngelt werden von der Zielgruppe und Fachleuten vor allem die fehlende Objektivit{\"{a}}t der Beurteilung und die assoziierten hohen Kosten. Neurotechnik wird auf Forschungsebene bereits im Auto und im Simulator eingesetzt und hat als Methode zur objektiven Fahrerzustandserkennung, auch von {\"{A}}lteren, Potential. Dieser Beitrag gibt einen {\"{U}}berblick {\"{u}}ber Assessment-Strategien der Fahreignung, und beschreibt ein angestrebtes Studiendesign, bei dem die Gehirnaktivit{\"{a}}ten mit Hilfe von EEG w{\"{a}}hrend der Fahrt aufgezeichnet und die M{\"{o}}glichkeit der Verbesserung der Fahrleistung durch Feedback und transkranielle Wechselstromstimulation im Auto erforscht werden soll. Der erste Ansatz und Pilotversuch zu letzterem Aspekt wird kurz vorgestellt.},
      address = {Berlin},
      author = {L{\"{o}}ffler, Birte Sofie and Fudickar, Sebastian and Herrmann, Christoph S. and Hein, Andreas},
      booktitle = {Trends in Neuroergonomics},
      doi = {10.14279/depositonce-4887},
      editor = {{Carolin Wienrich, Thorsten Zander},
      Klaus Gramann},
      file = {:C$\backslash$:/Users/NilsV/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/L{\"{o}}ffler B, Fudickar S, Herrmann CS - 2015 - Ein Blick in das Gehirn Messung und Verbesserung der Fahrleistung {\"{a}}lterer Autofahrender mit.pdf:pdf},
      isbn = {9783798328037},
      keywords = {UNIAMT,UNICSE,accepted},
      mendeley-tags = {UNIAMT,UNICSE,accepted},
      organization = {Technische Universit{\"{a}}t Berlin},
      pages = {166--169},
      publisher = {Universit{\"{a}}tsverlag der TU Berlin},
      series = {11. Berliner Werkstatt Mensch-Maschine-Systeme},
      title = {{Ein Blick in das Gehirn: Messung und Verbesserung der Fahrleistung {\"{a}}lterer Autofahrender mit Hilfe von Neuroimaging und Elektrostimulation}},
      url = {https://depositonce.tu-berlin.de/handle/11303/5190{\%}5Cnhttp://dx.doi.org/10.14279/depositonce-4887},
      year = {2015} }
  • [thesis] bibtex
    S. Fudickar, "Sub GHz Transceiver for Indoor Localisation of Smartphones - Optimising Localisation Accuracy and Device Runtimes," , 2014.
    @thesis{dissSFu, abstract = {For many innovative smartphone applications, precise localisation within buildings is a must. Various communication technologies support localisation, with received signal- strength (RSS)-based WiFi localisation being typically applied. However, precise indoor localisation via WiFi transceivers (2.4 GHz frequency band) is a problem, due to the critical energy consumption of the receiver, with frequent localisations resulting in short battery runtimes. The use of Sub GHz transceivers (frequency band 868 MHz), is supposed to be a good alternative, due to their lower power consumption. Considering the accuracy of localisa- tion both techniques have to be investigated in order to find out, if Sub GHz benefits also from the lower frequency band carrier. The main hypothesis of this thesis is therefore to prove that it is possible to achieve com- parable localisation accuracies within buildings with both transceiver techniques. Consid- ering the energy consumption a significant lower level with Sub GHz is expected, which will lead to enhanced runtime of the device. This hypothesis was proven via quantitative experimental studies of localisation accu- racy as well as of device runtimes. This was done by transceiver-specific model-based localisation algorithms that calculate a device location. This is based on received signal strength (RSS) of messages, sent by surrounding beacons. They were optimised in order to achieve low error-distances, floor-error and localisation-error rates. In order to conduct this study under realistic conditions the Efficient Mobile Unit (EMU), a mobile hand-held device, was developed. It contains WiFi and Sub GHz transceivers. EMU is mainly used for device-runtime tests and records RSS samples. RSS samples are input to “simLoc”, a simulator for evaluation and optimisation. Promising results have been achieved: With the evaluation environment, it was shown, that the optimised ITU-R (recommen- dation) indoor path-loss function with wall-attenuation represents the signal distribution very well. This path-loss function was the most accurate among eight evaluated ones: Compared to the log-distance path-loss function, its localisation-error distances were significantly lower. Not considering the wall attenuation, the accuracy of the indoor path-loss function appeared to be reduced for both transceivers. Additionally, transceiver-specific localisation algorithms were optimised especially for a multi-floor office building. Optimised algorithms for Sub GHz were generally more accurate than the ones for WiFi. Localisation and floor errors could be neglected as they did not harm the overall functionality. Localisation-accuracy was verified in a comparable building also. Specific algorithms were optimised, and showed that Sub GHz transceivers are applicable also for similar buildings, with a minor error-distance variation among both versions. Transceivers' influence on device runtimes was evaluated in a next step. Device runtime has been significantly enhanced (by 35{\%}) by Sub-GHz based localisation. Thus, concerning frequent indoor localisation, advantage of Sub GHz over WiFi in this context has been proven.},
      author = {Fudickar, Sebastian},
      title = {{Sub GHz Transceiver for Indoor Localisation of Smartphones - Optimising Localisation Accuracy and Device Runtimes}},
      year = {2014} }
  • [inproceedings] bibtex
    S. Fudickar, A. Lindemann, und B. Schnor, "Threshold-based fall detection on smart phones," in Proc. HEALTHINF 2014 - 7th International Conference on Health Informatics, Proceedings; Part of 7th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2014, 2014.
    @inproceedings{Fudickar2014a, abstract = {This paper evaluates threshold-based fall detection algorithms which use data from acceleration sensors that are part of the current smart phone technology. The evaluation was done with sampled fall records where young people simulate falls. To test the false positive rate of the algorithms, another record set with Activities of the Daily Living (ADLs) from elderlies was used. The results are very promising and show that smart phone sensors are suitable for fall detection. This will offer a new opportunity to assist elderlies in their daily living and extend their period of self-determined living.},
      author = {Fudickar, S. and Lindemann, A. and Schnor, B.},
      booktitle = {HEALTHINF 2014 - 7th International Conference on Health Informatics, Proceedings; Part of 7th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2014},
      isbn = {9789897580109},
      title = {{Threshold-based fall detection on smart phones}},
      year = {2014} }
  • [inproceedings] bibtex
    S. Fudickar und M. Valentin, "Most accurate algorithms for RSS-based Wi-Fi indoor localisation," in Proc. IPIN 2014 - 2014 International Conference on Indoor Positioning and Indoor Navigation, 2014.
    @inproceedings{Fudickar2014, abstract = {{\textcopyright} 2014 IEEE.Since Wi-Fi transceivers are available in most handheld devices, they are well suited for indoor localisation. This article analyses the relevance of thirteen factors of modelbased received signal strength indoor-localisation algorithms on localisation accuracies and identifies for each of these factors algorithms or parameter-settings that achieve high position accuracy. In order to assure the results' meaningfulness and comparability, these factors' optima have been identified via trace-driven empirical studies. By comparing position accuracies of the optimised optLoc localisation algorithm and of the Radar algorithm, a significant increase of accuracy was shown. In case of the optLoc algorithm, error distances dropped by ca. 1m and localisation-error rates decreased also significantly. In addition, the article studies energy efficiency of Wi-Fi based indoor localisation and identifies the most energy efficient approach.},
      author = {Fudickar, S. and Valentin, M.},
      booktitle = {IPIN 2014 - 2014 International Conference on Indoor Positioning and Indoor Navigation},
      doi = {10.1109/IPIN.2014.7275466},
      isbn = {9781467380546},
      title = {{Most accurate algorithms for RSS-based Wi-Fi indoor localisation}},
      year = {2014} }
  • [inproceedings] bibtex
    S. Fudickar und M. Valentin, "Comparing suitability of sub 1 GHz and WiFi transceivers for RSS-based indoor localisation," in Proc. IPIN 2014 - 2014 International Conference on Indoor Positioning and Indoor Navigation, 2014.
    @inproceedings{Fudickar2014b, abstract = {{\textcopyright} 2014 IEEE.WiFi transceivers are available in most hand-held devices and thus are well suited for indoor localisation. However, their critical high-power consumption is challenging acceptable battery runtimes for frequent localisation (such as tracking). Alternative transceivers that operate at frequencies of 868 MHz can be expected to be included in upcoming smartphones and achieve similar transmission ranges but have significant lower power-consumption. Thus, this article analyses if these alternative transceivers-so-called Sub GHz transceivers-are better suited for frequent indoor localisation, than WiFi transceivers. Therefore, localisation accuracies and battery runtimes have been analysed via trace-driven empirical studies and battery runtime tests. The results indicate that Sub GHz transceivers are better suited than WiFi transceivers in both considered terms and are especially more robust regarding the influence of obstacles and peoples. Sub GHz transceivers achieve significant lower RSS errors and are less influenced by wall attenuations. Consequently, their localisation achieved ca. 1 m more accurate median error distances than the corresponding versions that utilise WiFi transceivers. In addition, the battery runtimes are extended by 48{\%} when using Sub GHz transceivers instead of WiFi transceivers.},
      author = {Fudickar, S. and Valentin, M.},
      booktitle = {IPIN 2014 - 2014 International Conference on Indoor Positioning and Indoor Navigation},
      doi = {10.1109/IPIN.2014.7275502},
      isbn = {9781467380546},
      title = {{Comparing suitability of sub 1 GHz and WiFi transceivers for RSS-based indoor localisation}},
      year = {2014} }
  • [inproceedings] bibtex
    S. Fudickar, S. Amend, und B. Schnor, "On the comparability of indoor localization systems' accuracy," in Proc. Proceedings of the 5th ACM SIGSPATIAL International Workshop on Indoor Spatial Awareness, ISA 2013, 2013.
    @inproceedings{Fudickar2013, abstract = {While indoor localization is gaining increased relevance, the comparability of the published accuracies for localization algorithms is rarely given since the metrics, node densities and the evaluation environments vary. To overcome this limitation, a simulator for indoor localization algorithms called simLoc is presented which uses prerecorded received signal strengths of two different buildings. simLoc simulates both, different path loss models and different localization algorithms. Therefore, the simulator can be used to compare different algorithms, but it can also be used to find optimal parameter settings. This was done to optimize a localization system for mobile devices equipped with a 868 MHz radio. As a result, the optimized algorithm achieves significantly lower error-distances, floor-errors, and localizationerrors than the model-based RADAR system.},
      author = {Fudickar, S. and Amend, S. and Schnor, B.},
      booktitle = {Proceedings of the 5th ACM SIGSPATIAL International Workshop on Indoor Spatial Awareness, ISA 2013},
      doi = {10.1145/2533810.2533815},
      title = {{On the comparability of indoor localization systems' accuracy}},
      year = {2013} }
  • [inproceedings] bibtex
    S. Fudickar, M. Frohberg, S. Taube, P. Mahr, und B. Schnor, "An energy efficient mobile device for assisted living applications," in Proc. 2012 IEEE Online Conference on Green Communications, GreenCom 2012, 2012.
    @inproceedings{Fudickar2012, abstract = {Common problems of many elderly include falling accidents and getting lost while leaving their common surroundings unattended. We developed a mobile device that includes indoor localization based on the energy-efficiency Sub 1GHz wireless communication via radio signal strength (RSS) measurements and fall detection functionality. Power management is a critical part for the success of such a device. The authors suggest the use of Sub 1GHz transceivers (using the 433, 868 or 915 MHz frequency bands) with their optimized energy characteristics and increased transmission ranges for localization and emergency calls in case of a fall. Therefore, we present a hardware design of an energy efficient mobile device, the so-called EMU, that includes Sub 1GHz and Wi-Fi transceivers. An optimization of the Wi-Fi localization increased the uptime from 7 h to 9:25 hours. Further, the utilization of Sub 1GHz for localization has more than doubled the uptime to 21 hours, as shown in two benchmarks (measuring perchip power-consumption and system uptime while performing network communication), while achieving a comparable location accuracy. },
      author = {Fudickar, S. and Frohberg, M. and Taube, S. and Mahr, P. and Schnor, B.},
      booktitle = {2012 IEEE Online Conference on Green Communications, GreenCom 2012},
      doi = {10.1109/GreenCom.2012.6519629},
      isbn = {9781479903962},
      title = {{An energy efficient mobile device for assisted living applications}},
      year = {2012} }
  • [inproceedings] bibtex
    S. Fudickar, C. Karth, P. Mahr, und B. Schnor, "Fall-detection Simulator for accelerometers with in-hardware preprocessing," in Proc. ACM International Conference Proceeding Series, 2012.
    @inproceedings{Fudickar2012a, abstract = {Mobile fall-detection systems that use accelerometers (as the ADXL 345) with data pre-processing capabilities, enable processors to remain longer in low power modes and therefore can achieve extended device lifetimes. Since falldetection on these accelerometers is partially executed in hardware, the development and comparison of fall-detection algorithms requires direct evaluation on the hardware and increases complexity. We introduce a fall-detection simulator for the development and comparison of fall-detection algorithms for accelerometers with and without partial inhardware pre-processing. In addition comprehensive records of fall-situations and daily living activities were generated for the simulator from recording movements. With the help of the simulator, the sensitivity of a given fall-detection algorithm could be improved from 33{\%} to 93{\%}.},
      author = {Fudickar, S. and Karth, C. and Mahr, P. and Schnor, B.},
      booktitle = {ACM International Conference Proceeding Series},
      doi = {10.1145/2413097.2413149},
      isbn = {9781450313001},
      title = {{Fall-detection Simulator for accelerometers with in-hardware preprocessing}},
      year = {2012} }
  • [article] bibtex
    S. Fudickar und B. Schnor, "Automated Network Protocol Evaluation - the Potsdam Wireless Testbed," International Journal of Computing, vol. 10, pp. 337-343, 2011.
    @article{Testbed11, abstract = {The Potsdam Wireless Testbed supports validation and evaluation of Wi-Fi radio stacks and wireless applications in environments with heterogeneous hardware. In contrast to simulators, wireless testbeds support the network stack validation with specific radio chipsets and radio signal propagations. Furthermore, wireless testbeds unburden programmers from manually updating software on nodes. Scheduled test-runs are executed automatically for a defined duration including compilation and deployment of the protocols and measurement scripts as well as collection of measurement results and log files. The testbed supports heterogeneous processor architectures and radio chipsets via internal cross compilation. The developer can overview the visualized results of its validation and therefore can focus on the code and the results. Next to the support of several device and processor architectures, the Potsdam Wireless Testbed is intended to support additional radio frequency ranges as well as mobile device.},
      author = {Fudickar, Sebastian and Schnor, Bettina},
      journal = {International Journal of Computing},
      pages = {337--343},
      title = {{Automated Network Protocol Evaluation - the Potsdam Wireless Testbed}},
      volume = {10},
      year = {2011} }
  • [incollection] bibtex | Dokument aufrufen Dokument aufrufen
    S. Fudickar, B. Schnor, J. Felber, F. J. Neyer, M. Lenz, und M. Stede, "KopAL - An Orientation System For Patients With Dementia," in Series Ambient Intelligence and Smart Environments, Volume 9: Behaviour Monitoring and Interpretation - BMI, Gottfried, B. und Aghajan, H., Eds., IOS Press, 2011, pp. 83-104.
    @incollection{Fudickar2011a, abstract = {As a result of the aging societies in the western world, the impact of dementia, with its characteristics like disorientation and obliviousness is becoming a significant problem to an increasing amount of persons and the health system. To enable such dementia patients to regain a self determined life, we have developed a mobile orientation system called KopAL that assists dementia patients in every day problems, like remembering appointments, keeping track within their familiar surroundings as well as informing caretakers in critical situations, with a focus on minimal operational costs and a speech based human computer interface. While easy-to-use was one of KopALs requirements, the system itself uses and experiments with new technologies in the field of Mobile Ad Hoc Networks (MANETs), VoIP, and embedded systems. Further, KopAL is an interdisciplinary project. It is developed at Potsdam University within the Assisted Living Initiative of the Institute of Computer Science [3]. The working group Applied Computational Linguisics of Potsdam University cooperates to integrate speech generation and recognition on embedded systems. Psychologies from the University of Jena evaluate the project from the beginning: in helping to figure out the real user demands and a suited user-interface.},
      author = {Fudickar, Sebastian and Schnor, Bettina and Felber, Juliane and Neyer, Franz J. and Lenz, Mathias and Stede, Manfred},
      booktitle = {Series Ambient Intelligence and Smart Environments, Volume 9: Behaviour Monitoring and Interpretation - BMI},
      doi = {10.3233/978-1-60750-731-4-83},
      editor = {Gottfried, Bj{\"{o}}rn and Aghajan, Hamid},
      isbn = {978-1-60750-731-4},
      pages = {83 -- 104},
      publisher = {IOS Press},
      title = {{KopAL - An Orientation System For Patients With Dementia}},
      url = {http://ebooks.iospress.nl/volumearticle/28011},
      year = {2011} }
  • [inproceedings] bibtex | Dokument aufrufen Dokument aufrufen
    S. Fudickar, S. Faerber, und B. Schnor, "KopAL Appointment User-interface: An Evaluation with Elderly," in Proc. Proceedings of the 4th International Conference on PErvasive Technologies Related to Assistive Environments, New York, NY, USA, 2011, p. 42:1-42:6.
    @inproceedings{Fudickar:2011:KAU:2141622.2141672,
      author = {Fudickar, Sebastian and Faerber, Sebastian and Schnor, Bettina},
      title = {KopAL Appointment User-interface: An Evaluation with Elderly},
      booktitle = {Proceedings of the 4th International Conference on PErvasive Technologies Related to Assistive Environments},
      series = {PETRA '11},
      year = {2011},
      isbn = {978-1-4503-0772-7},
      location = {Heraklion, Crete, Greece},
      pages = {42:1--42:6},
      articleno = {42},
      numpages = {6},
      url = {http://doi.acm.org/10.1145/2141622.2141672},
      doi = {10.1145/2141622.2141672},
      acmid = {2141672},
      publisher = {ACM},
      address = {New York, NY, USA},
      keywords = {RFID, appointment, elderly, touch-screen, user-interface},
      abstract = {This article presents the appointment terminal, a new component of the KopAL orientation system for elderly and dementia patients. The appointment terminal is an intuitive to use screen that enables elderly to overview and arrange their appointments. A brief overview of the current appointment architecture of KopAL is given. The focused user group has special characteristics, like low technological competence and physical handicaps that results into special demands on the terminal design. As a result the terminal is based on touch-screens as presentation and interaction device, which are extended by RFID capabilities for authentication purposes. The evaluation of the terminal with heterogeneous users resulted in several ideas for future tasks.},
      }
  • [inproceedings] bibtex
    S. Fudickar, K. Rebensburg, und B. Schnor, "KopAN Speech Based Communication via MANETs Current work." 2009.
    @inproceedings{Fudickar2009b,
      author = {Fudickar, Sebastian and Rebensburg, Klaus and Schnor, Bettina},
      title = {{KopAN Speech Based Communication via MANETs Current work}},
      year = {2009} }
  • S. Fudickar und B. Schnor, "KopAL - A Mobile Orientation System for Dementia Patients," Intelligent Interactive Assistance and Mobile Multimedia Computing, pp. 109-118, 2009.
    @article{Fudickar2009, abstract = {In the aging sectors of societies in the western world, dementia and its characteristics such as disorientation and obliviousness are becoming a significant problem to an increasing number of people and health systems. In order to enable such dementia patients to regain a self-determined life, we have developed a mobile orientation system with a focus on minimal operational costs and a speech based human computer interface. This system assists dementia patients in everyday problems, such as remembering appointments and staying on track within their familiar surroundings as well as informing caretakers in critical situations.},
      author = {Fudickar, Sebastian and Schnor, Bettina},
      journal = {Intelligent Interactive Assistance and Mobile Multimedia Computing},
      pages = {109--118},
      title = {{KopAL - A Mobile Orientation System for Dementia Patients}},
      url = {http://dx.doi.org/10.1007/978-3-642-10263-9{\_}10},
      year = {2009} }
  • [inproceedings] bibtex
    S. Fudickar, K. Rebensburg, und B. Schnor, "MANETSip - A Dependable SIP Overlay Network for MANET Including Presentity Service," in Proc. The Fifth International Conference on Networking and Services, Valencia, Spain, 2009, pp. 314-319.
    @inproceedings{ManetSip09, abstract = {This work presents a dependable SIP overlay network for the usage in mobile ad hoc wireless networks focusing the availability of registrar and location services in combination with a reduced message transmission overhead regarding amount and size. In addition we enable a SIP presentity service which offers subscriber presentity state information to others. We show the performance of our approach through measurements with a prototype in a testbed.},
      address = {Valencia, Spain},
      author = {Fudickar, Sebastian and Rebensburg, Klaus and Schnor, Bettina},
      booktitle = {The Fifth International Conference on Networking and Services},
      mendeley-tags = {submitted},
      pages = {314--319},
      title = {{MANETSip - A Dependable SIP Overlay Network for MANET Including Presentity Service}},
      year = {2009} }
  • [book] bibtex
    S. Fudickar und B. Schnor, KopAL - A mobile orientation system for dementia patients, , 2009, vol. 53 CCIS.
    @book{Fudickar2009, abstract = {In the aging sectors of societies in the western world, dementia and its characteristics such as disorientation and obliviousness are becoming a significant problem to an increasing number of people and health systems. In order to enable such dementia patients to regain a self-determined life, we have developed a mobile orientation system with a focus on minimal operational costs and a speech based human computer interface. This system assists dementia patients in everyday problems, such as remembering appointments and staying on track within their familiar surroundings as well as informing caretakers in critical situations.},
      author = {Fudickar, S. and Schnor, B.},
      booktitle = {Communications in Computer and Information Science},
      doi = {10.1007/978-3-642-10263-9_10},
      isbn = {364210262X | 9783642102622},
      issn = {18650929},
      title = {{KopAL - A mobile orientation system for dementia patients}},
      volume = {53 CCIS},
      year = {2009} }
  • [article] bibtex
    K. Nurzynska und S. Fudickar, "Multiple Language, User-Friendly Sign Language Chat," International Journal of Emerging Technologies in Learning, vol. 2, 2007.
    @article{Fudickar07b,
      author = {Nurzynska, Karolina and Fudickar, Sebastian},
      journal = {International Journal of Emerging Technologies in Learning},
      title = {{Multiple Language, User-Friendly Sign Language Chat}},
      volume = {2},
      year = {2007} }
  • [inproceedings] bibtex
    S. Fudickar und K. Rebensburg, "TMNet - Distributed viewing and editing of Topic Maps in the World Wide Web Environment." 2007.
    @inproceedings{TMNet07,
      author = {Fudickar, Sebastian and Rebensburg, Klaus},
      journal = {International Journal of Online Engineering},
      title = {{TMNet - Distributed viewing and editing of Topic Maps in the World Wide Web Environment}},
      volume = {3},
      year = {2007} }
  • [inproceedings] bibtex
    S. Fudickar und K. Rebensburg, "Mobile Group-based Multimedia Cooperation System for MANETS," in Proc. IEEE Student Track of Inter. Conference on Interactive Mobile Communication Technologies and Learning (IMCL), Amman, Jordan, 2007.
    @inproceedings{Mobile07,
      author = {Fudickar, Sebastian and Rebensburg, Klaus},
      booktitle = {IEEE Student Track of Inter. Conference on Interactive Mobile Communication Technologies and Learning (IMCL) },
      address = {Amman, Jordan},
      title = {{Mobile Group-based Multimedia Cooperation System for MANETS}},
      volume = {1},
      year = {2007} }
  • [inproceedings] bibtex
    S. Fudickar und K. Nurzynska, "A User-Friendly Sign Language Chat," in Proc. International Conference on Interactive Collaborative Learning (ICL), Villach, Austria, 2007, pp. 1-7.
    @inproceedings{SignLanguageSFu, abstract = {The introduced concept of a gesture based sign language chat enables the communication of hearing impaired people over networks, including concerns regarding low throughput and bandwidth characteristics. Existing applications handle that task not appropriate, since either high bandwidth networks are necessary or the extensibility of the vocabulary is complicated for untrained users. Thereby our approach facilitates existing image recognition techniques for the determination of gestures which are captured by a standard camera. The recognised gestures then are mapped to a gesture Id that is transferred to the participants, where it is rendered. Additionally, the uncomplicated extension of the vocabulary by the users is supported. Therefore a centralised server updates the locally stored dictionaries, if necessary.},
      address = {Villach, Austria},
      author = {Fudickar, Sebastian and Nurzynska, Karolina},
      booktitle = {International Conference on Interactive Collaborative Learning (ICL)},
      pages = {1--7},
      title = {{A User-Friendly Sign Language Chat}},
      year = {2007} }
  • [inproceedings] bibtex
    N. Volkening, A. Unni, J. W. Rieger, S. Fudickar, und A. Hein, "Development of a mobile Functional Near-infrared Spectroscopy prototype.".
    @inproceedings{Volkening2018b, abstract = {Driving is a complex and cognitively demanding task. It is important to assess the cognitive state of the driver in order to develop cognitive technical systems that can adapt to different cognitive states of the driver. For this purpose, we have developed a mobile functional near-infrared spectroscopy (mofNIRS) prototype. This paper describes the improvements of this mobile prototype with freely placeable optodes on a subject's head and the results of an evaluation study. We conducted a motor cortex experiment with four subjects, whereby the mobile prototype was mounted on the right hemisphere and a commercial, stationary fNIRS on the left hemisphere above the motor cortex area. One data set had to be dis-carded due to incorrect synchronization between both systems. The results of the remaining three subjects are presented and discussed in this paper. Here, we report the results from the time-series and Statistical Parametric Mapping (SPM) analyses, which shows t-values with high differentiability of the Results. Furthermore, both analysis methods show comparable results between the commercial system and the mobile prototype.},
      author = {Volkening, Nils and Unni, Anirudh and Rieger, Jochem W. and Fudickar, Sebastian and Hein, Andreas},
      file = {:home/s/.local/share/data/Mendeley Ltd./Mendeley Desktop/Downloaded/Volkening et al. - Unknown - Development of a mobile Functional Near-infrared Spectroscopy prototype.pdf:pdf},
      title = {{Development of a mobile Functional Near-infrared Spectroscopy prototype}} }
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