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The processing of dynamic faces in the human brain: Support for an integrated neural framework of face processing

Michal Bernstein, Yaara Erez, Idan Blank, Galit Yovel
doi: https://doi.org/10.1101/140939
Michal Bernstein
Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
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Yaara Erez
MRC Cognition and Brain Sciences Unit, 15 Chaucer Rd, Cambridge, UK
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Idan Blank
Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA
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Galit Yovel
Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, IsraelSchool of Psychological Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
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Abstract

Faces convey rich information including identity, gender and expression. Current neural models of face processing suggest a dissociation between the processing of invariant facial aspects such as identity and gender, that engage the fusiform face area (FFA) and the processing of changeable aspects, such as expression and eye gaze, that engage the posterior superior temporal sulcus face area (pSTS-FA). Recent studies report a second dissociation within this network such that the pSTS-FA, but not the FFA, shows much stronger response to dynamic than static faces. The aim of the current study was to test a unified model that accounts for these two major functional characteristics of the neural face network. In an fMRI experiment, we presented static and dynamic faces while subjects judged an invariant (gender) or a changeable facial aspect (expression). We found that the pSTS-FA was more engaged in processing dynamic than static faces and changeable than invariant facial aspects, whereas the OFA and FFA showed similar response across all four conditions. Our results reveal no dissociation between the processing of changeable and invariant facial aspects, but higher sensitivity to the processing of changeable facial aspects by the motion-sensitive face area in the superior temporal sulcus.

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Posted June 05, 2017.
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The processing of dynamic faces in the human brain: Support for an integrated neural framework of face processing
Michal Bernstein, Yaara Erez, Idan Blank, Galit Yovel
bioRxiv 140939; doi: https://doi.org/10.1101/140939
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The processing of dynamic faces in the human brain: Support for an integrated neural framework of face processing
Michal Bernstein, Yaara Erez, Idan Blank, Galit Yovel
bioRxiv 140939; doi: https://doi.org/10.1101/140939

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