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Adaptation to feedback representation of illusory orientation produced from flash grab effect

Author

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  • Yijun Ge

    (Chinese Academy of Sciences
    University of Minnesota)

  • Hao Zhou

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Sino-Danish Center for Education and Research)

  • Chencan Qian

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Peng Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Lan Wang

    (Chinese Academy of Sciences)

  • Sheng He

    (Chinese Academy of Sciences
    University of Minnesota
    University of Chinese Academy of Sciences
    CAS Center for Excellence in Brain Science and Intelligence Technology)

Abstract

Adaptation is a ubiquitous property of sensory systems. It is typically considered that neurons adapt to dominant energy in the ambient environment to function optimally. However, perceptual representation of the stimulus, often modulated by feedback signals, sometimes do not correspond to the input state of the stimulus, which tends to be more linked with feedforward signals. Here we investigated the relative contributions to cortical adaptation from feedforward and feedback signals, taking advantage of a visual illusion, the Flash-Grab Effect, to disassociate the feedforward and feedback representation of an adaptor. Results reveal that orientation adaptation is exclusively dependent on the perceived rather than the retinal orientation of the adaptor. Combined fMRI and EEG measurements demonstrate that the perceived orientation of the Flash-Grab Effect is indeed supported by feedback signals in the cortex. These findings highlight the important contribution of feedback signals for cortical neurons to recalibrate their sensitivity.

Suggested Citation

  • Yijun Ge & Hao Zhou & Chencan Qian & Peng Zhang & Lan Wang & Sheng He, 2020. "Adaptation to feedback representation of illusory orientation produced from flash grab effect," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17786-1
    DOI: 10.1038/s41467-020-17786-1
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