October 2020
Volume 20, Issue 11
Open Access
Vision Sciences Society Annual Meeting Abstract  |   October 2020
Intracranial recordings reveal unique shape and timing of responses in human visual cortex during illusory visual events
Author Affiliations & Notes
  • Maartje Cathelijne de Jong
    Spinoza Centre for Neuroimaging, Amsterdam, The Netherlands
    University of Amsterdam, Dept. of Psychology, Amsterdam, the Netherlands
    Experimental and Applied Psychology, VU University, Amsterdam, The Netherlands
  • Mariska J. Vansteensel
    UMC Utrecht Brain Center, Dept. of Neurology and Neurosurgery, University Medical Center Utrecht, The Netherlands
  • Raymond van Ee
    Philips Research Laboratories, Department of Brain, Behavior and Cognition, Eindhoven, The Netherlands.
    Experimental Psychology, University of Leuven, Leuven, Belgium.
    Donders Institute, Radboud University, Department of Biophysics, Nijmegen, The Netherlands.
  • Frans S. S. Leijten
    UMC Utrecht Brain Center, Dept. of Neurology and Neurosurgery, University Medical Center Utrecht, The Netherlands
  • Nick F. Ramsey
    UMC Utrecht Brain Center, Dept. of Neurology and Neurosurgery, University Medical Center Utrecht, The Netherlands
  • H. Chris Dijkerman
    Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, the Netherlands.
  • Serge O. Dumoulin
    Spinoza Centre for Neuroimaging, Amsterdam, The Netherlands
    Experimental and Applied Psychology, VU University, Amsterdam, The Netherlands
    Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, the Netherlands.
  • Tomas Knapen
    Spinoza Centre for Neuroimaging, Amsterdam, The Netherlands
    Experimental and Applied Psychology, VU University, Amsterdam, The Netherlands
  • Footnotes
    Acknowledgements  This work was supported by NWO-CAS grant 012.200.012 awarded to TK, ABMP grant 2015-7 awarded to TK, an Ammodo KNAW Award awarded to SOD and NWO-VICI grant 016.Vici.185.050 awarded to SOD.
Journal of Vision October 2020, Vol.20, 375. doi:https://doi.org/10.1167/jov.20.11.375
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      Maartje Cathelijne de Jong, Mariska J. Vansteensel, Raymond van Ee, Frans S. S. Leijten, Nick F. Ramsey, H. Chris Dijkerman, Serge O. Dumoulin, Tomas Knapen; Intracranial recordings reveal unique shape and timing of responses in human visual cortex during illusory visual events. Journal of Vision 2020;20(11):375. doi: https://doi.org/10.1167/jov.20.11.375.

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      © ARVO (1962-2015); The Authors (2016-present)

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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 inverted for illusory as compared to physical changes: for illusory changes higher-order fusiform regions responded before lower-order occipital regions. These findings suggest 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.

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