The Role of Brain Activation and Cerebral Blood Flow in Mental Fatigue.

A modified Stroop task of 90 min, partitioned in 8 blocks of 252 stimuli, will be used as mentally fatiguing task. The Stroop task requires inhibition and sustained attention on controlled processes.

In the control task subjects will have to watch a documentary on the same computer screen as that used for the experimental trial. These documentaries are chosen based on their emotionally neutral, yet engaging content.