Decoding task and stimulus representations in face-responsive cortex
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nihms912845.pdf
Description
Accepted version
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788.07 KB
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Author(s)
Kliemann, Dorit
Jacoby, Nir
Anzellotti, Stefano
Saxe, Rebecca R.
Date Issued
December 2016
Journal
Cognitive Neuropsychology
Publisher
Informa UK Limited
Citation
Kliemann, Dorit et al., "Decoding task and stimulus representations in face-responsive cortex." Cognitive Neuropsychology 33, 7-8 (December 2016): 362-77 ©2016 Authors
Version
Author's final manuscript
Abstract
Observers can deliberately attend to some aspects of a face (e.g. emotional expression) while ignoring others. How do internal goals influence representational geometry in face-responsive cortex? Participants watched videos of naturalistic dynamic faces during MRI scanning. We measured multivariate neural response patterns while participants formed an intention to attend to a facial aspect (age, or emotional valence), and then attended to that aspect, and responses to the face's emotional valence, independent of attention. Distinct patterns of response to the two tasks were found while forming the intention, in left fronto-lateral but not face-responsive regions, and while attending to the face, in almost all face-responsive regions. Emotional valence was represented in right posterior superior temporal sulcus and medial prefrontal cortex, but could not be decoded when unattended. Shifting the focus of attention thus alters cortical representation of social information, probably reflecting neural flexibility to optimally integrate goals and perceptual input. ©2016 Informa UK Limited, trading as Taylor & Francis Group.
MIT Department
McGovern Institute for Brain Research at MIT
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1080/02643294.2016.1256873
