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Activation of the motivation-related ventral striatum during delusional experience
Delusion is the most characteristic symptom of psychosis, occurring in almost all first-episode psychosis patients. The motivational salience hypothesis suggests delusion to originate from the experience of abnormal motivational salience. Whether the motivation-related brain circuitries are activate...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6298954/ https://www.ncbi.nlm.nih.gov/pubmed/30563960 http://dx.doi.org/10.1038/s41398-018-0347-8 |
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author | Raij, Tuukka T. Riekki, Tapani J. J. Rikandi, Eva Mäntylä, Teemu Kieseppä, Tuula Suvisaari, Jaana |
author_facet | Raij, Tuukka T. Riekki, Tapani J. J. Rikandi, Eva Mäntylä, Teemu Kieseppä, Tuula Suvisaari, Jaana |
author_sort | Raij, Tuukka T. |
collection | PubMed |
description | Delusion is the most characteristic symptom of psychosis, occurring in almost all first-episode psychosis patients. The motivational salience hypothesis suggests delusion to originate from the experience of abnormal motivational salience. Whether the motivation-related brain circuitries are activated during the actual delusional experience remains, however, unknown. We used a forced-choice answering tree at random intervals during functional magnetic resonance imaging to capture delusional and non-delusional spontaneous experiences in patients with first-episode psychosis (n = 31) or clinical high-risk state (n = 7). The motivation-related brain regions were identified by an automated meta-analysis of 149 studies. Thirteen first-episode patients reported both delusional and non-delusional spontaneous experiences. In these patients, delusional experiences were related to stronger activation of the ventral striatum in both hemispheres. This activation overlapped with the most strongly motivation-related brain regions. These findings provide an empirical link between the actual delusional experience and the motivational salience hypothesis. Further use and development of the present methods in localizing the neurobiological basis of the most characteristic symptoms may be useful in the search for etiopathogenic pathways that result in psychotic disorders. |
format | Online Article Text |
id | pubmed-6298954 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-62989542018-12-26 Activation of the motivation-related ventral striatum during delusional experience Raij, Tuukka T. Riekki, Tapani J. J. Rikandi, Eva Mäntylä, Teemu Kieseppä, Tuula Suvisaari, Jaana Transl Psychiatry Article Delusion is the most characteristic symptom of psychosis, occurring in almost all first-episode psychosis patients. The motivational salience hypothesis suggests delusion to originate from the experience of abnormal motivational salience. Whether the motivation-related brain circuitries are activated during the actual delusional experience remains, however, unknown. We used a forced-choice answering tree at random intervals during functional magnetic resonance imaging to capture delusional and non-delusional spontaneous experiences in patients with first-episode psychosis (n = 31) or clinical high-risk state (n = 7). The motivation-related brain regions were identified by an automated meta-analysis of 149 studies. Thirteen first-episode patients reported both delusional and non-delusional spontaneous experiences. In these patients, delusional experiences were related to stronger activation of the ventral striatum in both hemispheres. This activation overlapped with the most strongly motivation-related brain regions. These findings provide an empirical link between the actual delusional experience and the motivational salience hypothesis. Further use and development of the present methods in localizing the neurobiological basis of the most characteristic symptoms may be useful in the search for etiopathogenic pathways that result in psychotic disorders. Nature Publishing Group UK 2018-12-18 /pmc/articles/PMC6298954/ /pubmed/30563960 http://dx.doi.org/10.1038/s41398-018-0347-8 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Raij, Tuukka T. Riekki, Tapani J. J. Rikandi, Eva Mäntylä, Teemu Kieseppä, Tuula Suvisaari, Jaana Activation of the motivation-related ventral striatum during delusional experience |
title | Activation of the motivation-related ventral striatum during delusional experience |
title_full | Activation of the motivation-related ventral striatum during delusional experience |
title_fullStr | Activation of the motivation-related ventral striatum during delusional experience |
title_full_unstemmed | Activation of the motivation-related ventral striatum during delusional experience |
title_short | Activation of the motivation-related ventral striatum during delusional experience |
title_sort | activation of the motivation-related ventral striatum during delusional experience |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6298954/ https://www.ncbi.nlm.nih.gov/pubmed/30563960 http://dx.doi.org/10.1038/s41398-018-0347-8 |
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