The effects of dopaminergic medication on dynamic decision making in Parkinson's disease
Identifieur interne : 000B82 ( Main/Curation ); précédent : 000B81; suivant : 000B83The effects of dopaminergic medication on dynamic decision making in Parkinson's disease
Auteurs : Magda Osman [Royaume-Uni] ; Agata Rytersk [Royaume-Uni] ; Kash Karimi [Royaume-Uni] ; LINGLING TU [République populaire de Chine] ; Ignacio Obeso [Canada] ; Maarten Speekenbrink [Royaume-Uni] ; Marjan Jahanshahi [Royaume-Uni]Source :
- Neuropsychologia [ 0028-3932 ] ; 2014.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Prise de décision, Homme.
English descriptors
- KwdEn :
Abstract
In the present study we address the following questions: (1) How is performance affected when patients with Parkinson's Disease (PD) perform a dynamic decision making task? (2) Does dopaminergic medication differentially affect dynamic decision making? To address these questions participants were trained with different goals during learning: either they made intervention-based decisions or prediction-based decisions during learning. The findings show that overall there is an advantage for those trained to intervene over those trained to predict. In addition, the results are the first demonstration that PD patients 'ON' (N=20) compared to 'OFF' L-Dopa (N=15) medication and also relative to healthy age matched controls (N=16) showed lower levels of relative improvement in the accuracy of their decisions in a dynamic decision making task, and tended to use sub-optimal strategies. These findings provide support for the 'Dopamine Overdose' hypothesis using a novel decision making task, and suggest that executive functions such as decision making can be adversely affected by dopaminergic medication in PD.
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Antiparkinson agent</term>
<term>Decision making</term>
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<term>Learning</term>
<term>Overdosing</term>
<term>Parkinson disease</term>
<term>Prediction</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Dopamine</term>
<term>Prise de décision</term>
<term>Maladie de Parkinson</term>
<term>Prédiction</term>
<term>Surdosage</term>
<term>Apprentissage</term>
<term>Antiparkinsonien</term>
<term>Homme</term>
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<front><div type="abstract" xml:lang="en">In the present study we address the following questions: (1) How is performance affected when patients with Parkinson's Disease (PD) perform a dynamic decision making task? (2) Does dopaminergic medication differentially affect dynamic decision making? To address these questions participants were trained with different goals during learning: either they made intervention-based decisions or prediction-based decisions during learning. The findings show that overall there is an advantage for those trained to intervene over those trained to predict. In addition, the results are the first demonstration that PD patients 'ON' (N=20) compared to 'OFF' L-Dopa (N=15) medication and also relative to healthy age matched controls (N=16) showed lower levels of relative improvement in the accuracy of their decisions in a dynamic decision making task, and tended to use sub-optimal strategies. These findings provide support for the 'Dopamine Overdose' hypothesis using a novel decision making task, and suggest that executive functions such as decision making can be adversely affected by dopaminergic medication in PD.</div>
</front>
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