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Temporal dynamics of face adaptation

The appearance of a face can be strongly affected by adaptation to faces seen previously. A number of studies have examined the time course of these aftereffects, but the integration time over which adaptation pools signals to control the adaptation state remains uncertain. Here we examined the effe...

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Autores principales: Gao, Yi, Pieller, Jarod, Webster, Michael A., Jiang, Fang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Association for Research in Vision and Ophthalmology 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9624263/
https://www.ncbi.nlm.nih.gov/pubmed/36301525
http://dx.doi.org/10.1167/jov.22.11.14
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author Gao, Yi
Pieller, Jarod
Webster, Michael A.
Jiang, Fang
author_facet Gao, Yi
Pieller, Jarod
Webster, Michael A.
Jiang, Fang
author_sort Gao, Yi
collection PubMed
description The appearance of a face can be strongly affected by adaptation to faces seen previously. A number of studies have examined the time course of these aftereffects, but the integration time over which adaptation pools signals to control the adaptation state remains uncertain. Here we examined the effects of temporal frequency on face gender aftereffects induced by a pair of faces alternating between the two genders to assess when the aftereffects were pooled over successive faces versus driven by the last face seen. In the first experiment, we found that temporal frequencies between 0.25 and 2.00 Hz all failed to produce an aftereffect, suggesting a fairly long integration time. In the second experiment, we therefore probed slower alternation rates of 0.03 to 0.25 Hz. A rate of 0.0625 Hz (i.e., 8 seconds per face) was required to generate significant aftereffects from the last presented face and was consistent with an average time constant of 15 to 20 seconds for an exponentially decaying integration window. This integration time is substantially longer than found previously for analogous effects for alternating colors, and thus points to a potentially slower mechanism of adaptation for faces compared with chromatic adaptation.
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spelling pubmed-96242632022-11-02 Temporal dynamics of face adaptation Gao, Yi Pieller, Jarod Webster, Michael A. Jiang, Fang J Vis Article The appearance of a face can be strongly affected by adaptation to faces seen previously. A number of studies have examined the time course of these aftereffects, but the integration time over which adaptation pools signals to control the adaptation state remains uncertain. Here we examined the effects of temporal frequency on face gender aftereffects induced by a pair of faces alternating between the two genders to assess when the aftereffects were pooled over successive faces versus driven by the last face seen. In the first experiment, we found that temporal frequencies between 0.25 and 2.00 Hz all failed to produce an aftereffect, suggesting a fairly long integration time. In the second experiment, we therefore probed slower alternation rates of 0.03 to 0.25 Hz. A rate of 0.0625 Hz (i.e., 8 seconds per face) was required to generate significant aftereffects from the last presented face and was consistent with an average time constant of 15 to 20 seconds for an exponentially decaying integration window. This integration time is substantially longer than found previously for analogous effects for alternating colors, and thus points to a potentially slower mechanism of adaptation for faces compared with chromatic adaptation. The Association for Research in Vision and Ophthalmology 2022-10-27 /pmc/articles/PMC9624263/ /pubmed/36301525 http://dx.doi.org/10.1167/jov.22.11.14 Text en Copyright 2022 The Authors https://creativecommons.org/licenses/by/4.0/This work is licensed under a Creative Commons Attribution 4.0 International License.
spellingShingle Article
Gao, Yi
Pieller, Jarod
Webster, Michael A.
Jiang, Fang
Temporal dynamics of face adaptation
title Temporal dynamics of face adaptation
title_full Temporal dynamics of face adaptation
title_fullStr Temporal dynamics of face adaptation
title_full_unstemmed Temporal dynamics of face adaptation
title_short Temporal dynamics of face adaptation
title_sort temporal dynamics of face adaptation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9624263/
https://www.ncbi.nlm.nih.gov/pubmed/36301525
http://dx.doi.org/10.1167/jov.22.11.14
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