Early alpha/beta oscillations reflect the formation of face-related expectations in the brain.

Although statistical regularities in the environment often go explicitly unnoticed, traces of implicit learning are evident in our neural activity. Recent perspectives have offered evidence that both pre-stimulus oscillations and peri-stimulus event-related potentials are reliable biomarkers of impl...

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Autores principales:	Marlen A Roehe, Daniel S Kluger, Svea C Y Schroeder, Lena M Schliephake, Jens Boelte, Thomas Jacobsen, Ricarda I Schubotz
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2a246273f0cc4d3f986e271723684352
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spelling	oai:doaj.org-article:2a246273f0cc4d3f986e2717236843522021-12-02T20:06:26ZEarly alpha/beta oscillations reflect the formation of face-related expectations in the brain.1932-620310.1371/journal.pone.0255116https://doaj.org/article/2a246273f0cc4d3f986e2717236843522021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0255116https://doaj.org/toc/1932-6203Although statistical regularities in the environment often go explicitly unnoticed, traces of implicit learning are evident in our neural activity. Recent perspectives have offered evidence that both pre-stimulus oscillations and peri-stimulus event-related potentials are reliable biomarkers of implicit expectations arising from statistical learning. What remains ambiguous, however, is the origination and development of these implicit expectations. To address this lack of knowledge and determine the temporal constraints of expectation formation, pre-stimulus increases in alpha/beta power were investigated alongside a reduction in the N170 and a suppression in peri-/post-stimulus gamma power. Electroencephalography was acquired from naive participants who engaged in a gender classification task. Participants were uninformed, that eight face images were sorted into four reoccurring pairs which were pseudorandomly hidden amongst randomly occurring face images. We found a reduced N170 for statistically expected images at left parietal and temporo-parietal electrodes. Furthermore, enhanced gamma power following the presentation of random images emphasized the bottom-up processing of these arbitrary occurrences. In contrast, enhanced alpha/beta power was evident pre-stimulus for expected relative to random faces. A particularly interesting finding was the early onset of alpha/beta power enhancement which peaked immediately after the depiction of the predictive face. Hence, our findings propose an approximate timeframe throughout which consistent traces of enhanced alpha/beta power illustrate the early prioritisation of top-down processes to facilitate the development of implicitly cued face-related expectations.Marlen A RoeheDaniel S KlugerSvea C Y SchroederLena M SchliephakeJens BoelteThomas JacobsenRicarda I SchubotzPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0255116 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marlen A Roehe Daniel S Kluger Svea C Y Schroeder Lena M Schliephake Jens Boelte Thomas Jacobsen Ricarda I Schubotz Early alpha/beta oscillations reflect the formation of face-related expectations in the brain.
description	Although statistical regularities in the environment often go explicitly unnoticed, traces of implicit learning are evident in our neural activity. Recent perspectives have offered evidence that both pre-stimulus oscillations and peri-stimulus event-related potentials are reliable biomarkers of implicit expectations arising from statistical learning. What remains ambiguous, however, is the origination and development of these implicit expectations. To address this lack of knowledge and determine the temporal constraints of expectation formation, pre-stimulus increases in alpha/beta power were investigated alongside a reduction in the N170 and a suppression in peri-/post-stimulus gamma power. Electroencephalography was acquired from naive participants who engaged in a gender classification task. Participants were uninformed, that eight face images were sorted into four reoccurring pairs which were pseudorandomly hidden amongst randomly occurring face images. We found a reduced N170 for statistically expected images at left parietal and temporo-parietal electrodes. Furthermore, enhanced gamma power following the presentation of random images emphasized the bottom-up processing of these arbitrary occurrences. In contrast, enhanced alpha/beta power was evident pre-stimulus for expected relative to random faces. A particularly interesting finding was the early onset of alpha/beta power enhancement which peaked immediately after the depiction of the predictive face. Hence, our findings propose an approximate timeframe throughout which consistent traces of enhanced alpha/beta power illustrate the early prioritisation of top-down processes to facilitate the development of implicitly cued face-related expectations.
format	article
author	Marlen A Roehe Daniel S Kluger Svea C Y Schroeder Lena M Schliephake Jens Boelte Thomas Jacobsen Ricarda I Schubotz
author_facet	Marlen A Roehe Daniel S Kluger Svea C Y Schroeder Lena M Schliephake Jens Boelte Thomas Jacobsen Ricarda I Schubotz
author_sort	Marlen A Roehe
title	Early alpha/beta oscillations reflect the formation of face-related expectations in the brain.
title_short	Early alpha/beta oscillations reflect the formation of face-related expectations in the brain.
title_full	Early alpha/beta oscillations reflect the formation of face-related expectations in the brain.
title_fullStr	Early alpha/beta oscillations reflect the formation of face-related expectations in the brain.
title_full_unstemmed	Early alpha/beta oscillations reflect the formation of face-related expectations in the brain.
title_sort	early alpha/beta oscillations reflect the formation of face-related expectations in the brain.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/2a246273f0cc4d3f986e271723684352
work_keys_str_mv	AT marlenaroehe earlyalphabetaoscillationsreflecttheformationoffacerelatedexpectationsinthebrain AT danielskluger earlyalphabetaoscillationsreflecttheformationoffacerelatedexpectationsinthebrain AT sveacyschroeder earlyalphabetaoscillationsreflecttheformationoffacerelatedexpectationsinthebrain AT lenamschliephake earlyalphabetaoscillationsreflecttheformationoffacerelatedexpectationsinthebrain AT jensboelte earlyalphabetaoscillationsreflecttheformationoffacerelatedexpectationsinthebrain AT thomasjacobsen earlyalphabetaoscillationsreflecttheformationoffacerelatedexpectationsinthebrain AT ricardaischubotz earlyalphabetaoscillationsreflecttheformationoffacerelatedexpectationsinthebrain
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Early alpha/beta oscillations reflect the formation of face-related expectations in the brain.

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