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Pre-stimulus alpha phase-alignment predicts P1-amplitude
Since years there is a hotly discussed dispute whether event-related potentials are either generated by an evoked component or by resetting of ongoing phase. We argue that phase-reset must not be proven in order to accept the general involvement of phase in ERP-generation as it is only one of severa...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier Science
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3144391/ https://www.ncbi.nlm.nih.gov/pubmed/21473900 http://dx.doi.org/10.1016/j.brainresbull.2011.03.025 |
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author | Fellinger, R. Klimesch, W. Gruber, W. Freunberger, R. Doppelmayr, M. |
author_facet | Fellinger, R. Klimesch, W. Gruber, W. Freunberger, R. Doppelmayr, M. |
author_sort | Fellinger, R. |
collection | PubMed |
description | Since years there is a hotly discussed dispute whether event-related potentials are either generated by an evoked component or by resetting of ongoing phase. We argue that phase-reset must not be proven in order to accept the general involvement of phase in ERP-generation as it is only one of several possible mechanisms influencing or generating certain ERP-components. Supporting data are presented showing that positive peaks of ongoing pre-stimulus alpha activity are not randomly distributed in time across trials. Most importantly, we found that a certain kind of pre-stimulus phase concentration that represents a continuous development of an alpha wave up to the time window where the P1 is generated is associated with an enlarged event-related component. We conclude that ongoing oscillations cannot be considered random background noise (even before stimulus onset) and that there are probably more phase-mechanisms that can contribute to the ERP-generation. |
format | Online Article Text |
id | pubmed-3144391 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Elsevier Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-31443912011-08-30 Pre-stimulus alpha phase-alignment predicts P1-amplitude Fellinger, R. Klimesch, W. Gruber, W. Freunberger, R. Doppelmayr, M. Brain Res Bull Research Report Since years there is a hotly discussed dispute whether event-related potentials are either generated by an evoked component or by resetting of ongoing phase. We argue that phase-reset must not be proven in order to accept the general involvement of phase in ERP-generation as it is only one of several possible mechanisms influencing or generating certain ERP-components. Supporting data are presented showing that positive peaks of ongoing pre-stimulus alpha activity are not randomly distributed in time across trials. Most importantly, we found that a certain kind of pre-stimulus phase concentration that represents a continuous development of an alpha wave up to the time window where the P1 is generated is associated with an enlarged event-related component. We conclude that ongoing oscillations cannot be considered random background noise (even before stimulus onset) and that there are probably more phase-mechanisms that can contribute to the ERP-generation. Elsevier Science 2011-07-15 /pmc/articles/PMC3144391/ /pubmed/21473900 http://dx.doi.org/10.1016/j.brainresbull.2011.03.025 Text en © 2011 Elsevier Inc. https://creativecommons.org/licenses/by-nc-nd/3.0/ Open Access under CC BY-NC-ND 3.0 (https://creativecommons.org/licenses/by-nc-nd/3.0/) license |
spellingShingle | Research Report Fellinger, R. Klimesch, W. Gruber, W. Freunberger, R. Doppelmayr, M. Pre-stimulus alpha phase-alignment predicts P1-amplitude |
title | Pre-stimulus alpha phase-alignment predicts P1-amplitude |
title_full | Pre-stimulus alpha phase-alignment predicts P1-amplitude |
title_fullStr | Pre-stimulus alpha phase-alignment predicts P1-amplitude |
title_full_unstemmed | Pre-stimulus alpha phase-alignment predicts P1-amplitude |
title_short | Pre-stimulus alpha phase-alignment predicts P1-amplitude |
title_sort | pre-stimulus alpha phase-alignment predicts p1-amplitude |
topic | Research Report |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3144391/ https://www.ncbi.nlm.nih.gov/pubmed/21473900 http://dx.doi.org/10.1016/j.brainresbull.2011.03.025 |
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