Color Space Geometry Uncovered with Magnetoencephalography.
EEG
MDS
RSA
Sapir-Whorf hypothesis
basic color categories
color decoding
color processing
cross-temporal generalization
electroencephalography
mind reading
multidimensional scaling
representational similarity analysis
scalp recording
semantic representations
Journal
Current biology : CB
ISSN: 1879-0445
Titre abrégé: Curr Biol
Pays: England
ID NLM: 9107782
Informations de publication
Date de publication:
08 02 2021
08 02 2021
Historique:
received:
13
08
2020
revised:
21
09
2020
accepted:
21
10
2020
pubmed:
18
11
2020
medline:
4
1
2022
entrez:
17
11
2020
Statut:
ppublish
Résumé
The geometry that describes the relationship among colors, and the neural mechanisms that support color vision, are unsettled. Here, we use multivariate analyses of measurements of brain activity obtained with magnetoencephalography to reverse-engineer a geometry of the neural representation of color space. The analyses depend upon determining similarity relationships among the spatial patterns of neural responses to different colors and assessing how these relationships change in time. We evaluate the approach by relating the results to universal patterns in color naming. Two prominent patterns of color naming could be accounted for by the decoding results: the greater precision in naming warm colors compared to cool colors evident by an interaction of hue and lightness, and the preeminence among colors of reddish hues. Additional experiments showed that classifiers trained on responses to color words could decode color from data obtained using colored stimuli, but only at relatively long delays after stimulus onset. These results provide evidence that perceptual representations can give rise to semantic representations, but not the reverse. Taken together, the results uncover a dynamic geometry that provides neural correlates for color appearance and generates new hypotheses about the structure of color space.
Identifiants
pubmed: 33202253
pii: S0960-9822(20)31605-5
doi: 10.1016/j.cub.2020.10.062
pmc: PMC7878424
mid: NIHMS1647655
pii:
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, N.I.H., Intramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
515-526.e5Subventions
Organisme : NEI NIH HHS
ID : R01 EY023322
Pays : United States
Organisme : Intramural NIH HHS
ID : Z99 EY999999
Pays : United States
Organisme : Intramural NIH HHS
ID : ZIA EY000558
Pays : United States
Commentaires et corrections
Type : CommentIn
Type : ErratumIn
Type : ErratumIn
Informations de copyright
Published by Elsevier Inc.
Déclaration de conflit d'intérêts
Declaration of Interests The authors declare no competing interests.
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