Enhanced motivation of cognitive control in Parkinson's disease

The European Journal of Neuroscience
Monique H M TimmerRoshan Cools

Abstract

Motor and cognitive deficits in Parkinson's disease (PD) have been argued to reflect motivational deficits. In prior work, however, we have shown that motivation of cognitive control is paradoxically potentiated rather than impaired in Parkinson's disease. This is particularly surprising given the fact that Parkinson's disease is often accompanied by depression, a prototypical disorder of motivation. To replicate our previous finding and assess the effects of depression, we investigated performance of PD patients with (n = 22) and without depression (history) (n = 23) and age-matched healthy controls (n = 23) on a task specifically designed to measure the effect of reward motivation on task-switching. We replicated previous findings by showing contrasting effects of reward motivation on task-switching in PD patients and age-matched healthy controls. While the promise of high versus low reward improved task-switching in PD, it tended to impair task-switching in age-matched healthy controls. There were no effects of a depression (history) diagnosis in PD patients. These findings reinforce prior observations that Parkinson's disease is accompanied by enhanced incentive motivation of cognitive control and highlight the potential of...Continue Reading

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Citations

Mar 17, 2020·The European Journal of Neuroscience·Yu-Chen ChungBeth E Fisher
Oct 7, 2020·Scientific Reports·Lieke HofmansRoshan Cools
Jun 15, 2021·Trends in Cognitive Sciences·Andrew WestbrookRoshan Cools

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