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Occipital-temporal cortical tuning to semantic and affective features of natural images predicts associated behavioral responses.
Abdel-Ghaffar, Samy A; Huth, Alexander G; Lescroart, Mark D; Stansbury, Dustin; Gallant, Jack L; Bishop, Sonia J.
Afiliação
  • Abdel-Ghaffar SA; Department of Psychology, UC Berkeley, Berkeley, CA, 94720, USA.
  • Huth AG; Google LLC, San Francisco, CA, USA.
  • Lescroart MD; Centre for Theoretical and Computational Neuroscience, UT Austin, Austin, TX, 78712, USA.
  • Stansbury D; Department of Psychology University of Nevada Reno, Reno, NV, 89557, USA.
  • Gallant JL; Program in Vision Sciences, UC Berkeley, Berkeley, CA, 94720, USA.
  • Bishop SJ; Department of Psychology, UC Berkeley, Berkeley, CA, 94720, USA.
Nat Commun ; 15(1): 5531, 2024 Jul 09.
Article em En | MEDLINE | ID: mdl-38982092
ABSTRACT
In everyday life, people need to respond appropriately to many types of emotional stimuli. Here, we investigate whether human occipital-temporal cortex (OTC) shows co-representation of the semantic category and affective content of visual stimuli. We also explore whether OTC transformation of semantic and affective features extracts information of value for guiding behavior. Participants viewed 1620 emotional natural images while functional magnetic resonance imaging data were acquired. Using voxel-wise modeling we show widespread tuning to semantic and affective image features across OTC. The top three principal components underlying OTC voxel-wise responses to image features encoded stimulus animacy, stimulus arousal and interactions of animacy with stimulus valence and arousal. At low to moderate dimensionality, OTC tuning patterns predicted behavioral responses linked to each image better than regressors directly based on image features. This is consistent with OTC representing stimulus semantic category and affective content in a manner suited to guiding behavior.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Semântica / Lobo Temporal / Imageamento por Ressonância Magnética / Emoções / Lobo Occipital Limite: Adult / Female / Humans / Male Idioma: En Revista: Nat Commun Assunto da revista: BIOLOGIA / CIENCIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Estados Unidos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Semântica / Lobo Temporal / Imageamento por Ressonância Magnética / Emoções / Lobo Occipital Limite: Adult / Female / Humans / Male Idioma: En Revista: Nat Commun Assunto da revista: BIOLOGIA / CIENCIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Estados Unidos