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Neural adaptation to faces reveals racial outgroup homogeneity effects in early perception
A hallmark of intergroup biases is the tendency to individuate members of one’s own group but process members of other groups categorically. While the consequences of these biases for stereotyping and discrimination are well-documented, their early perceptual underpinnings remain less understood. He...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
National Academy of Sciences
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6642392/ https://www.ncbi.nlm.nih.gov/pubmed/31262811 http://dx.doi.org/10.1073/pnas.1822084116 |
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author | Hughes, Brent L. Camp, Nicholas P. Gomez, Jesse Natu, Vaidehi S. Grill-Spector, Kalanit Eberhardt, Jennifer L. |
author_facet | Hughes, Brent L. Camp, Nicholas P. Gomez, Jesse Natu, Vaidehi S. Grill-Spector, Kalanit Eberhardt, Jennifer L. |
author_sort | Hughes, Brent L. |
collection | PubMed |
description | A hallmark of intergroup biases is the tendency to individuate members of one’s own group but process members of other groups categorically. While the consequences of these biases for stereotyping and discrimination are well-documented, their early perceptual underpinnings remain less understood. Here, we investigated the neural mechanisms of this effect by testing whether high-level visual cortex is differentially tuned in its sensitivity to variation in own-race versus other-race faces. Using a functional MRI adaptation paradigm, we measured White participants’ habituation to blocks of White and Black faces that parametrically varied in their groupwise similarity. Participants showed a greater tendency to individuate own-race faces in perception, showing both greater release from adaptation to unique identities and increased sensitivity in the adaptation response to physical difference among faces. These group differences emerge in the tuning of early face-selective cortex and mirror behavioral differences in the memory and perception of own- versus other-race faces. Our results suggest that biases for other-race faces emerge at some of the earliest stages of sensory perception. |
format | Online Article Text |
id | pubmed-6642392 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | National Academy of Sciences |
record_format | MEDLINE/PubMed |
spelling | pubmed-66423922019-07-25 Neural adaptation to faces reveals racial outgroup homogeneity effects in early perception Hughes, Brent L. Camp, Nicholas P. Gomez, Jesse Natu, Vaidehi S. Grill-Spector, Kalanit Eberhardt, Jennifer L. Proc Natl Acad Sci U S A Social Sciences A hallmark of intergroup biases is the tendency to individuate members of one’s own group but process members of other groups categorically. While the consequences of these biases for stereotyping and discrimination are well-documented, their early perceptual underpinnings remain less understood. Here, we investigated the neural mechanisms of this effect by testing whether high-level visual cortex is differentially tuned in its sensitivity to variation in own-race versus other-race faces. Using a functional MRI adaptation paradigm, we measured White participants’ habituation to blocks of White and Black faces that parametrically varied in their groupwise similarity. Participants showed a greater tendency to individuate own-race faces in perception, showing both greater release from adaptation to unique identities and increased sensitivity in the adaptation response to physical difference among faces. These group differences emerge in the tuning of early face-selective cortex and mirror behavioral differences in the memory and perception of own- versus other-race faces. Our results suggest that biases for other-race faces emerge at some of the earliest stages of sensory perception. National Academy of Sciences 2019-07-16 2019-07-01 /pmc/articles/PMC6642392/ /pubmed/31262811 http://dx.doi.org/10.1073/pnas.1822084116 Text en Copyright © 2019 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/ https://creativecommons.org/licenses/by-nc-nd/4.0/This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) . |
spellingShingle | Social Sciences Hughes, Brent L. Camp, Nicholas P. Gomez, Jesse Natu, Vaidehi S. Grill-Spector, Kalanit Eberhardt, Jennifer L. Neural adaptation to faces reveals racial outgroup homogeneity effects in early perception |
title | Neural adaptation to faces reveals racial outgroup homogeneity effects in early perception |
title_full | Neural adaptation to faces reveals racial outgroup homogeneity effects in early perception |
title_fullStr | Neural adaptation to faces reveals racial outgroup homogeneity effects in early perception |
title_full_unstemmed | Neural adaptation to faces reveals racial outgroup homogeneity effects in early perception |
title_short | Neural adaptation to faces reveals racial outgroup homogeneity effects in early perception |
title_sort | neural adaptation to faces reveals racial outgroup homogeneity effects in early perception |
topic | Social Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6642392/ https://www.ncbi.nlm.nih.gov/pubmed/31262811 http://dx.doi.org/10.1073/pnas.1822084116 |
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