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Functional significance of the emotion-related late positive potential
The late positive potential (LPP) is an event-related potential (ERP) component over visual cortical areas that is modulated by the emotional intensity of a stimulus. However, the functional significance of this neural modulation remains elusive. We conducted two experiments in which we studied the...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3287021/ https://www.ncbi.nlm.nih.gov/pubmed/22375117 http://dx.doi.org/10.3389/fnhum.2012.00033 |
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author | Brown, Stephen B. R. E. van Steenbergen, Henk Band, Guido P. H. de Rover, Mischa Nieuwenhuis, Sander |
author_facet | Brown, Stephen B. R. E. van Steenbergen, Henk Band, Guido P. H. de Rover, Mischa Nieuwenhuis, Sander |
author_sort | Brown, Stephen B. R. E. |
collection | PubMed |
description | The late positive potential (LPP) is an event-related potential (ERP) component over visual cortical areas that is modulated by the emotional intensity of a stimulus. However, the functional significance of this neural modulation remains elusive. We conducted two experiments in which we studied the relation between LPP amplitude, subsequent perceptual sensitivity to a non-emotional stimulus (Experiment 1) and visual cortical excitability, as reflected by P1/N1 components evoked by this stimulus (Experiment 2). During the LPP modulation elicited by unpleasant stimuli, perceptual sensitivity was not affected. In contrast, we found some evidence for a decreased N1 amplitude during the LPP modulation, a decreased P1 amplitude on trials with a relatively large LPP, and consistent negative (but non-significant) across-subject correlations between the magnitudes of the LPP modulation and corresponding changes in d-prime or P1/N1 amplitude. The results provide preliminary evidence that the LPP reflects a global inhibition of activity in visual cortex, resulting in the selective survival of activity associated with the processing of the emotional stimulus. |
format | Online Article Text |
id | pubmed-3287021 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-32870212012-02-28 Functional significance of the emotion-related late positive potential Brown, Stephen B. R. E. van Steenbergen, Henk Band, Guido P. H. de Rover, Mischa Nieuwenhuis, Sander Front Hum Neurosci Neuroscience The late positive potential (LPP) is an event-related potential (ERP) component over visual cortical areas that is modulated by the emotional intensity of a stimulus. However, the functional significance of this neural modulation remains elusive. We conducted two experiments in which we studied the relation between LPP amplitude, subsequent perceptual sensitivity to a non-emotional stimulus (Experiment 1) and visual cortical excitability, as reflected by P1/N1 components evoked by this stimulus (Experiment 2). During the LPP modulation elicited by unpleasant stimuli, perceptual sensitivity was not affected. In contrast, we found some evidence for a decreased N1 amplitude during the LPP modulation, a decreased P1 amplitude on trials with a relatively large LPP, and consistent negative (but non-significant) across-subject correlations between the magnitudes of the LPP modulation and corresponding changes in d-prime or P1/N1 amplitude. The results provide preliminary evidence that the LPP reflects a global inhibition of activity in visual cortex, resulting in the selective survival of activity associated with the processing of the emotional stimulus. Frontiers Media S.A. 2012-02-27 /pmc/articles/PMC3287021/ /pubmed/22375117 http://dx.doi.org/10.3389/fnhum.2012.00033 Text en Copyright © 2012 Brown, van Steenbergen, Band, de Rover and Nieuwenhuis. http://www.frontiersin.org/licenseagreement This is an open-access article distributed under the terms of the Creative Commons Attribution Non Commercial License, which permits non-commercial use, distribution, and reproduction in other forums, provided the original authors and source are credited. |
spellingShingle | Neuroscience Brown, Stephen B. R. E. van Steenbergen, Henk Band, Guido P. H. de Rover, Mischa Nieuwenhuis, Sander Functional significance of the emotion-related late positive potential |
title | Functional significance of the emotion-related late positive potential |
title_full | Functional significance of the emotion-related late positive potential |
title_fullStr | Functional significance of the emotion-related late positive potential |
title_full_unstemmed | Functional significance of the emotion-related late positive potential |
title_short | Functional significance of the emotion-related late positive potential |
title_sort | functional significance of the emotion-related late positive potential |
topic | Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3287021/ https://www.ncbi.nlm.nih.gov/pubmed/22375117 http://dx.doi.org/10.3389/fnhum.2012.00033 |
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