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Dopaminergic Medication Increases Reliance on Current Information in Parkinson’s Disease
The neurotransmitter dopamine is crucial for decision-making under uncertainty but its computational role is still a subject of intense debate. To test potential roles, we had patients with Parkinson’s disease (PD), who have less internally-generated dopamine, participate in a visual decision-making...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5549845/ https://www.ncbi.nlm.nih.gov/pubmed/28804782 http://dx.doi.org/10.1038/s41562-017-0129 |
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author | Vilares, Iris Kording, Konrad P. |
author_facet | Vilares, Iris Kording, Konrad P. |
author_sort | Vilares, Iris |
collection | PubMed |
description | The neurotransmitter dopamine is crucial for decision-making under uncertainty but its computational role is still a subject of intense debate. To test potential roles, we had patients with Parkinson’s disease (PD), who have less internally-generated dopamine, participate in a visual decision-making task in which uncertainty in both prior and current sensory information was varied and where behavior is often predicted by Bayesian statistics. We found that many aspects of uncertainty processing were conserved in PD: they could learn the prior uncertainty and utilize both priors and current sensory information. As predicted by prominent theories, we found that dopaminergic medication influenced the weight given to sensory information. However, as PD patients learn, this bias disappeared. In addition, throughout the experiment the patients exhibited lower sensitivity to current sensory uncertainty. Our results provide empirical evidence for the idea that dopamine levels, which are affected by PD and the drugs used for its treatment, influence the reliance on new information. |
format | Online Article Text |
id | pubmed-5549845 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
record_format | MEDLINE/PubMed |
spelling | pubmed-55498452018-01-17 Dopaminergic Medication Increases Reliance on Current Information in Parkinson’s Disease Vilares, Iris Kording, Konrad P. Nat Hum Behav Article The neurotransmitter dopamine is crucial for decision-making under uncertainty but its computational role is still a subject of intense debate. To test potential roles, we had patients with Parkinson’s disease (PD), who have less internally-generated dopamine, participate in a visual decision-making task in which uncertainty in both prior and current sensory information was varied and where behavior is often predicted by Bayesian statistics. We found that many aspects of uncertainty processing were conserved in PD: they could learn the prior uncertainty and utilize both priors and current sensory information. As predicted by prominent theories, we found that dopaminergic medication influenced the weight given to sensory information. However, as PD patients learn, this bias disappeared. In addition, throughout the experiment the patients exhibited lower sensitivity to current sensory uncertainty. Our results provide empirical evidence for the idea that dopamine levels, which are affected by PD and the drugs used for its treatment, influence the reliance on new information. 2017-07-17 2017-08 /pmc/articles/PMC5549845/ /pubmed/28804782 http://dx.doi.org/10.1038/s41562-017-0129 Text en Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use:http://www.nature.com/authors/editorial_policies/license.html#terms |
spellingShingle | Article Vilares, Iris Kording, Konrad P. Dopaminergic Medication Increases Reliance on Current Information in Parkinson’s Disease |
title | Dopaminergic Medication Increases Reliance on Current Information in Parkinson’s Disease |
title_full | Dopaminergic Medication Increases Reliance on Current Information in Parkinson’s Disease |
title_fullStr | Dopaminergic Medication Increases Reliance on Current Information in Parkinson’s Disease |
title_full_unstemmed | Dopaminergic Medication Increases Reliance on Current Information in Parkinson’s Disease |
title_short | Dopaminergic Medication Increases Reliance on Current Information in Parkinson’s Disease |
title_sort | dopaminergic medication increases reliance on current information in parkinson’s disease |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5549845/ https://www.ncbi.nlm.nih.gov/pubmed/28804782 http://dx.doi.org/10.1038/s41562-017-0129 |
work_keys_str_mv | AT vilaresiris dopaminergicmedicationincreasesrelianceoncurrentinformationinparkinsonsdisease AT kordingkonradp dopaminergicmedicationincreasesrelianceoncurrentinformationinparkinsonsdisease |