Investigating decision-making in Parkinson’s disease in tasks characterized by probabilistic cue-outcome associations: the role of optimality

Agata Ryterska, Adam J. L. Harris, Anastasia Ejova, Marjan Jahanshahi, Magda Osman

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Abstract

Is probabilistic information one of the critical factors contributing to decision-making impairments in Parkinson's disease (PD)? The results of many studies may suggest that in fact it is, and that PD patients struggle to process probabilities accurately. However, a growing body of evidence suggests otherwise. To explore this issue further, a novel gambling scenario was developed in order to compare decision-making behaviour in the form of betting in three different set ups: deterministic, probabilistic, and unpredictable. Participants' behaviour was analysed using newly developed metrics, designed to examine optimal betting strategies. In our novel task PD patients performed as well as age-matched healthy controls (OHCs) across different set ups. Thus, in answer to the question posed, probabilistic information persedoes not seem to be the critical factor in causing impaired decision-making in PD.
Original languageEnglish
Pages (from-to)2-1-2-10
Number of pages10
JournalAnnals of neuroscience and psychology
Volume1
Publication statusPublished - 2014
Externally publishedYes

Bibliographical note

Copyright the Author(s) 2014. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • Parkinson's disease
  • Decision-making
  • Optimality
  • Gambling
  • Probabilistic environment

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