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Brain maps of Iowa gambling task
BACKGROUND: Somatic Marker Hypothesis (SMH), based on clinical observations, delineates neuronal networks for interpreting consciousness generation and decision-making. The Iowa gambling task (IGT) was designed to verify the SMH. However, more and more behavioral and brain imaging studies had report...
Autores principales: | , , , |
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Formato: | Texto |
Lenguaje: | English |
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BioMed Central
2008
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2518922/ https://www.ncbi.nlm.nih.gov/pubmed/18655719 http://dx.doi.org/10.1186/1471-2202-9-72 |
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author | Lin, Ching-Hung Chiu, Yao-Chu Cheng, Chou-Ming Hsieh, Jen-Chuen |
author_facet | Lin, Ching-Hung Chiu, Yao-Chu Cheng, Chou-Ming Hsieh, Jen-Chuen |
author_sort | Lin, Ching-Hung |
collection | PubMed |
description | BACKGROUND: Somatic Marker Hypothesis (SMH), based on clinical observations, delineates neuronal networks for interpreting consciousness generation and decision-making. The Iowa gambling task (IGT) was designed to verify the SMH. However, more and more behavioral and brain imaging studies had reported incongruent results that pinpointed a need to re-evaluate the central representations of SMH. The current study used event-related fMRI (functional Magnetic Resonance Imaging) to examine neural correlates of anticipation vs. outcome, wins vs. losses, and differential decks' contingencies of IGT. RESULTS: Behavioral results showed a prominent effect of frequency in driving choices. The insula and basal ganglia were activated during the anticipation phase while the inferior parietal lobule was activated during the outcome phase. The activation of medial prefrontal cortex was especially targeted during the high punishment contingencies. The data suggest that under uncertainty the normal decision makers can become myopic. CONCLUSION: The insula and basal ganglia might play a vital role in long-term guidance of decision-making. Inferior parietal lobule might participate in evaluating the consequence and medial prefrontal cortex may service the function of error monitoring. |
format | Text |
id | pubmed-2518922 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2008 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-25189222008-08-22 Brain maps of Iowa gambling task Lin, Ching-Hung Chiu, Yao-Chu Cheng, Chou-Ming Hsieh, Jen-Chuen BMC Neurosci Research Article BACKGROUND: Somatic Marker Hypothesis (SMH), based on clinical observations, delineates neuronal networks for interpreting consciousness generation and decision-making. The Iowa gambling task (IGT) was designed to verify the SMH. However, more and more behavioral and brain imaging studies had reported incongruent results that pinpointed a need to re-evaluate the central representations of SMH. The current study used event-related fMRI (functional Magnetic Resonance Imaging) to examine neural correlates of anticipation vs. outcome, wins vs. losses, and differential decks' contingencies of IGT. RESULTS: Behavioral results showed a prominent effect of frequency in driving choices. The insula and basal ganglia were activated during the anticipation phase while the inferior parietal lobule was activated during the outcome phase. The activation of medial prefrontal cortex was especially targeted during the high punishment contingencies. The data suggest that under uncertainty the normal decision makers can become myopic. CONCLUSION: The insula and basal ganglia might play a vital role in long-term guidance of decision-making. Inferior parietal lobule might participate in evaluating the consequence and medial prefrontal cortex may service the function of error monitoring. BioMed Central 2008-07-26 /pmc/articles/PMC2518922/ /pubmed/18655719 http://dx.doi.org/10.1186/1471-2202-9-72 Text en Copyright © 2008 Lin et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Lin, Ching-Hung Chiu, Yao-Chu Cheng, Chou-Ming Hsieh, Jen-Chuen Brain maps of Iowa gambling task |
title | Brain maps of Iowa gambling task |
title_full | Brain maps of Iowa gambling task |
title_fullStr | Brain maps of Iowa gambling task |
title_full_unstemmed | Brain maps of Iowa gambling task |
title_short | Brain maps of Iowa gambling task |
title_sort | brain maps of iowa gambling task |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2518922/ https://www.ncbi.nlm.nih.gov/pubmed/18655719 http://dx.doi.org/10.1186/1471-2202-9-72 |
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