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Intraparietal stimulation disrupts negative distractor effects in human multi-alternative decision-making
There has been debate about whether addition of an irrelevant distractor option to an otherwise binary decision influences which of the two choices is taken. We show that disparate views on this question are reconciled if distractors exert two opposing but not mutually exclusive effects. Each effect...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
eLife Sciences Publications, Ltd
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9946441/ https://www.ncbi.nlm.nih.gov/pubmed/36811348 http://dx.doi.org/10.7554/eLife.75007 |
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author | Kohl, Carmen Wong, Michelle XM Wong, Jing Jun Rushworth, Matthew FS Chau, Bolton KH |
author_facet | Kohl, Carmen Wong, Michelle XM Wong, Jing Jun Rushworth, Matthew FS Chau, Bolton KH |
author_sort | Kohl, Carmen |
collection | PubMed |
description | There has been debate about whether addition of an irrelevant distractor option to an otherwise binary decision influences which of the two choices is taken. We show that disparate views on this question are reconciled if distractors exert two opposing but not mutually exclusive effects. Each effect predominates in a different part of decision space: (1) a positive distractor effect predicts high-value distractors improve decision-making; (2) a negative distractor effect, of the type associated with divisive normalisation models, entails decreased accuracy with increased distractor values. Here, we demonstrate both distractor effects coexist in human decision making but in different parts of a decision space defined by the choice values. We show disruption of the medial intraparietal area (MIP) by transcranial magnetic stimulation (TMS) increases positive distractor effects at the expense of negative distractor effects. Furthermore, individuals with larger MIP volumes are also less susceptible to the disruption induced by TMS. These findings also demonstrate a causal link between MIP and the impact of distractors on decision-making via divisive normalisation. |
format | Online Article Text |
id | pubmed-9946441 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | eLife Sciences Publications, Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-99464412023-02-23 Intraparietal stimulation disrupts negative distractor effects in human multi-alternative decision-making Kohl, Carmen Wong, Michelle XM Wong, Jing Jun Rushworth, Matthew FS Chau, Bolton KH eLife Neuroscience There has been debate about whether addition of an irrelevant distractor option to an otherwise binary decision influences which of the two choices is taken. We show that disparate views on this question are reconciled if distractors exert two opposing but not mutually exclusive effects. Each effect predominates in a different part of decision space: (1) a positive distractor effect predicts high-value distractors improve decision-making; (2) a negative distractor effect, of the type associated with divisive normalisation models, entails decreased accuracy with increased distractor values. Here, we demonstrate both distractor effects coexist in human decision making but in different parts of a decision space defined by the choice values. We show disruption of the medial intraparietal area (MIP) by transcranial magnetic stimulation (TMS) increases positive distractor effects at the expense of negative distractor effects. Furthermore, individuals with larger MIP volumes are also less susceptible to the disruption induced by TMS. These findings also demonstrate a causal link between MIP and the impact of distractors on decision-making via divisive normalisation. eLife Sciences Publications, Ltd 2023-02-22 /pmc/articles/PMC9946441/ /pubmed/36811348 http://dx.doi.org/10.7554/eLife.75007 Text en © 2023, Kohl et al https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited. |
spellingShingle | Neuroscience Kohl, Carmen Wong, Michelle XM Wong, Jing Jun Rushworth, Matthew FS Chau, Bolton KH Intraparietal stimulation disrupts negative distractor effects in human multi-alternative decision-making |
title | Intraparietal stimulation disrupts negative distractor effects in human multi-alternative decision-making |
title_full | Intraparietal stimulation disrupts negative distractor effects in human multi-alternative decision-making |
title_fullStr | Intraparietal stimulation disrupts negative distractor effects in human multi-alternative decision-making |
title_full_unstemmed | Intraparietal stimulation disrupts negative distractor effects in human multi-alternative decision-making |
title_short | Intraparietal stimulation disrupts negative distractor effects in human multi-alternative decision-making |
title_sort | intraparietal stimulation disrupts negative distractor effects in human multi-alternative decision-making |
topic | Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9946441/ https://www.ncbi.nlm.nih.gov/pubmed/36811348 http://dx.doi.org/10.7554/eLife.75007 |
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