Stress affects hedonic responses but not reaching-grasping in Parkinson's disease.
Stress can transiently increase motor symptoms of Parkinson's disease (PD), but it is unclear whether other behavioural changes associated with PD are also affected. We found that reaching-grasping was impaired in 19 PD patients compared with 19 matched controls, but these impairments were not amplified by stress. However, patients showed a stress-induced reduction of hedonic responses. Stress may amplify those impairments in PD that are not accessible to cognitive control.
Macht
Michael
M
University of Würzburg, Department of Psychology (Biological Psychology, Clinical Psychology and Psychotherapy), Marcusstrasse 9-11, 97070 Würzburg, Germany. macht@psychologie.uni-wuerzburg.de
Brandstetter
Susanne
S
Ellgring
Heiner
H
D000368:Aged; D000704:Analysis of Variance; D016022:Case-Control Studies; D004644:Emotions / Q000502:physiology*; D005260:Female; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000503:physiopathology* / Q000523:psychology*; D011597:Psychomotor Performance / Q000502:physiology*; D013312:Stress, Physiological