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Intracranial Markers of Conscious Face Perception in Humans

Fabiano Baroni, Jochem van Kempen, Hiroto Kawasaki, Christopher K. Kovach, Hiroyuki Oya, Matthew A. Howard, Ralph Adolphs, Naotsugu Tsuchiya
doi: https://doi.org/10.1101/037234
Fabiano Baroni
1School of Psychological Sciences, Faculty of Biomedical and Psychological Sciences, Monash University, Australia
2NeuroEngineering Laboratory, Department of Electrical & Electronic Engineering, The University of Melbourne, Australia
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Jochem van Kempen
3Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, United Kingdom
1School of Psychological Sciences, Faculty of Biomedical and Psychological Sciences, Monash University, Australia
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Hiroto Kawasaki
4Department of Neurosurgery, University of Iowa, Iowa City, IA, USA
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Christopher K. Kovach
4Department of Neurosurgery, University of Iowa, Iowa City, IA, USA
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Hiroyuki Oya
4Department of Neurosurgery, University of Iowa, Iowa City, IA, USA
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Matthew A. Howard
4Department of Neurosurgery, University of Iowa, Iowa City, IA, USA
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Ralph Adolphs
5Division of Humanities and Social Sciences, California Institute of Technology, Pasadena, CA, USA
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Naotsugu Tsuchiya
1School of Psychological Sciences, Faculty of Biomedical and Psychological Sciences, Monash University, Australia
6Monash Institute of Cognitive and Clinical Neuroscience, Monash University, Australia
7Decoding and Controlling Brain Information, Japan Science and Technology Agency, Chiyoda-ku, Tokyo, Japan
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Abstract

The comparison between perceived and unperceived trials at perceptual threshold isolates not only the core neuronal substrate of a particular conscious perception, but also aspects of brain activity that facilitate, hinder or tend to follow conscious perception. We take a step towards the resolution of these confounds by combining an analysis of ECoG neuronal responses observed during the presentation of faces partially masked by Continuous Flash Suppression, and those responses observed during the unmasked presentation of faces and other images in the same subjects. Neuronal activity in both the fusiform gyrus and the superior temporal sulcus discriminated seen vs. unseen faces in the masked paradigm and upright faces vs. other categories in the unmasked paradigm. However, only the former discriminated upright vs. inverted faces in the unmasked paradigm. Our results suggest a prominent role for the fusiform gyrus in the configural perception of faces.

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Posted March 11, 2016.
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Intracranial Markers of Conscious Face Perception in Humans
Fabiano Baroni, Jochem van Kempen, Hiroto Kawasaki, Christopher K. Kovach, Hiroyuki Oya, Matthew A. Howard, Ralph Adolphs, Naotsugu Tsuchiya
bioRxiv 037234; doi: https://doi.org/10.1101/037234
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Intracranial Markers of Conscious Face Perception in Humans
Fabiano Baroni, Jochem van Kempen, Hiroto Kawasaki, Christopher K. Kovach, Hiroyuki Oya, Matthew A. Howard, Ralph Adolphs, Naotsugu Tsuchiya
bioRxiv 037234; doi: https://doi.org/10.1101/037234

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