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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...

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Detalles Bibliográficos
Autores principales: Fellinger, R., Klimesch, W., Gruber, W., Freunberger, R., Doppelmayr, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Science 2011
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.
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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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