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Intracranial Recordings Reveal Unique Shape and Timing of Responses in Human Visual Cortex during Illusory Visual Events.

Authors
  • de Jong, Maartje C1
  • Vansteensel, Mariska J2
  • van Ee, Raymond3
  • Leijten, Frans S S2
  • Ramsey, Nick F2
  • Dijkerman, H Chris4
  • Dumoulin, Serge O5
  • Knapen, Tomas6
  • 1 Spinoza Centre for Neuroimaging, Meibergdreef 47, 1105 Amsterdam, the Netherlands; Experimental and Applied Psychology, VU University, Van der Boechorststraat 7, 1081 Amsterdam, the Netherlands. Electronic address: [email protected] , (Netherlands)
  • 2 UMC Utrecht Brain Center, Department of Neurology and Neurosurgery, University Medical Center Utrecht, Heidelberglaan 100, 3584 Utrecht, the Netherlands. , (Netherlands)
  • 3 Department of Brain, Behavior & Cognition, Philips Research Laboratories, High Tech Campus 34, 5656 Eindhoven, the Netherlands; Experimental Psychology, University of Leuven, Tiensestraat 102 - box 3711, Leuven 3000, Belgium; Department of Biophysics, Donders Institute, Radboud University, PO Box 9010//066, 6500 Nijmegen, the Netherlands. , (Belgium)
  • 4 Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, 3584 Utrecht, the Netherlands. , (Netherlands)
  • 5 Spinoza Centre for Neuroimaging, Meibergdreef 47, 1105 Amsterdam, the Netherlands; Experimental and Applied Psychology, VU University, Van der Boechorststraat 7, 1081 Amsterdam, the Netherlands; Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, 3584 Utrecht, the Netherlands. , (Netherlands)
  • 6 Spinoza Centre for Neuroimaging, Meibergdreef 47, 1105 Amsterdam, the Netherlands; Experimental and Applied Psychology, VU University, Van der Boechorststraat 7, 1081 Amsterdam, the Netherlands. , (Netherlands)
Type
Published Article
Journal
Current biology : CB
Publication Date
Aug 17, 2020
Volume
30
Issue
16
Identifiers
DOI: 10.1016/j.cub.2020.05.082
PMID: 32619489
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

During binocular rivalry, perception spontaneously changes without any alteration to the visual stimulus. What neural events bring about this illusion that a constant stimulus is changing? We recorded from intracranial electrodes placed on the occipital and posterior temporal cortex of two patients with epilepsy while they experienced illusory changes of a face-house binocular-rivalry stimulus or observed a control stimulus that physically changed. We performed within-patient comparisons of broadband high-frequency responses, focusing on single epochs recorded along the ventral processing stream. We found transient face- and house-selective responses localized to the same electrodes for illusory and physical changes, but the temporal characteristics of these responses markedly differed. In comparison with physical changes, responses to illusory changes were longer lasting, in particular exhibiting a characteristic slow rise. Furthermore, the temporal order of responses across the visual hierarchy was reversed for illusory as compared to physical changes: for illusory changes, higher order fusiform and parahippocampal regions responded before lower order occipital regions. Our tentative interpretation of these findings is that two stages underlie the initiation of illusory changes: a destabilization stage in which activity associated with the impending change gradually accumulates across the visual hierarchy, ultimately graduating in a top-down cascade of activity that may stabilize the new perceptual interpretation of the stimulus. Copyright © 2020 Elsevier Inc. All rights reserved.

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