Visual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination

Abstract The ability to individualize faces is a fundamental human brain function. Following visual adaptation to one individual face, the suppressed neural response to this identity becomes discriminable from an unadapted facial identity at a neural population level. Here, we investigate a simple a...

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Autores principales:	Talia L. Retter, Bruno Rossion
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/964b4e7d663c426e8b1850a5705f1200
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id	oai:doaj.org-article:964b4e7d663c426e8b1850a5705f1200
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spelling	oai:doaj.org-article:964b4e7d663c426e8b1850a5705f12002021-12-02T15:05:31ZVisual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination10.1038/s41598-017-03348-x2045-2322https://doaj.org/article/964b4e7d663c426e8b1850a5705f12002017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03348-xhttps://doaj.org/toc/2045-2322Abstract The ability to individualize faces is a fundamental human brain function. Following visual adaptation to one individual face, the suppressed neural response to this identity becomes discriminable from an unadapted facial identity at a neural population level. Here, we investigate a simple and objective measure of individual face discrimination with electroencephalographic (EEG) frequency tagging following adaptation. In a first condition, (1) two facial identities are presented in alternation at a rate of six images per second (6 Hz; 3 Hz identity repetition rate) for a 20 s testing sequence, following 10-s adaptation to one of the facial identities; this results in a significant identity discrimination response at 3 Hz in the frequency domain of the EEG over right occipito-temporal channels, replicating our previous findings. Such a 3 Hz response is absent for two novel conditions, in which (2) the faces are inverted and (3) an identity physically equidistant from the two faces is adapted. These results indicate that low-level visual features present in inverted or unspecific facial identities are not sufficient to produce the adaptation effect found for upright facial stimuli, which appears to truly reflect identity-specific perceptual representations in the human brain.Talia L. RetterBruno RossionNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Talia L. Retter Bruno Rossion Visual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination
description	Abstract The ability to individualize faces is a fundamental human brain function. Following visual adaptation to one individual face, the suppressed neural response to this identity becomes discriminable from an unadapted facial identity at a neural population level. Here, we investigate a simple and objective measure of individual face discrimination with electroencephalographic (EEG) frequency tagging following adaptation. In a first condition, (1) two facial identities are presented in alternation at a rate of six images per second (6 Hz; 3 Hz identity repetition rate) for a 20 s testing sequence, following 10-s adaptation to one of the facial identities; this results in a significant identity discrimination response at 3 Hz in the frequency domain of the EEG over right occipito-temporal channels, replicating our previous findings. Such a 3 Hz response is absent for two novel conditions, in which (2) the faces are inverted and (3) an identity physically equidistant from the two faces is adapted. These results indicate that low-level visual features present in inverted or unspecific facial identities are not sufficient to produce the adaptation effect found for upright facial stimuli, which appears to truly reflect identity-specific perceptual representations in the human brain.
format	article
author	Talia L. Retter Bruno Rossion
author_facet	Talia L. Retter Bruno Rossion
author_sort	Talia L. Retter
title	Visual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination
title_short	Visual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination
title_full	Visual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination
title_fullStr	Visual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination
title_full_unstemmed	Visual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination
title_sort	visual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/964b4e7d663c426e8b1850a5705f1200
work_keys_str_mv	AT talialretter visualadaptationrevealsanobjectiveelectrophysiologicalmeasureofhighlevelindividualfacediscrimination AT brunorossion visualadaptationrevealsanobjectiveelectrophysiologicalmeasureofhighlevelindividualfacediscrimination
_version_	1718388782555725824

Visual adaptation reveals an objective electrophysiological measure of high-level individual face discrimination

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