Parkinson’s disease is a well-known neurodegenerative disease in the aging society, that is mainly recognized by the problems of shaking (tremor) and rigidity. Besides these common symptoms, patients may also suffer from cognitive malfunction and slowness of movement, which may become visible in some clinical experiments like the Go/No-Go tasks. These tasks consist of two types of stimuli that are presented to the subject, one indicating that the subject has to respond to the stimulus and the other one saying that the subject has to withhold the response. ...