How is the organization of brain networks related to cognitive performance? To investigate this question and to experimentally manipulate cognitive performance and brain network topology I use brain imaging techniques, direct brain stimulation and drugs that affect cognitions.

My main research questions are:

• Effects of cognitive drugs largely differ between subjects. Is this variance related to differences in brain network topology?
• Are declines or improvements in performance (due to fatigue or cognitive enhancers) related to changes in brain network integrations?
• Brain networks actively try to overcome network distortions. Are these compensation effects related to changes in brain network topology?

Current research topics