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Cortical depth profiles in primary visual cortex for illusory and imaginary experiences

Author

Listed:
  • Johanna Bergmann

    (University of Glasgow
    University of Glasgow
    Max Planck Institute for Human Cognitive and Brain Sciences)

  • Lucy S. Petro

    (University of Glasgow
    University of Glasgow)

  • Clement Abbatecola

    (University of Glasgow
    University of Glasgow)

  • Min S. Li

    (University of Glasgow
    University of Birmingham)

  • A. Tyler Morgan

    (University of Glasgow
    University of Glasgow
    National Institute of Mental Health, NIH)

  • Lars Muckli

    (University of Glasgow
    University of Glasgow)

Abstract

Visual illusions and mental imagery are non-physical sensory experiences that involve cortical feedback processing in the primary visual cortex. Using laminar functional magnetic resonance imaging (fMRI) in two studies, we investigate if information about these internal experiences is visible in the activation patterns of different layers of primary visual cortex (V1). We find that imagery content is decodable mainly from deep layers of V1, whereas seemingly ‘real’ illusory content is decodable mainly from superficial layers. Furthermore, illusory content shares information with perceptual content, whilst imagery content does not generalise to illusory or perceptual information. Together, our results suggest that illusions and imagery, which differ immensely in their subjective experiences, also involve partially distinct early visual microcircuits. However, overlapping microcircuit recruitment might emerge based on the nuanced nature of subjective conscious experience.

Suggested Citation

  • Johanna Bergmann & Lucy S. Petro & Clement Abbatecola & Min S. Li & A. Tyler Morgan & Lars Muckli, 2024. "Cortical depth profiles in primary visual cortex for illusory and imaginary experiences," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45065-w
    DOI: 10.1038/s41467-024-45065-w
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    References listed on IDEAS

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    1. Nadine Dijkstra & Stephen M. Fleming, 2023. "Subjective signal strength distinguishes reality from imagination," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Matthias Ekman & Peter Kok & Floris P. de Lange, 2017. "Time-compressed preplay of anticipated events in human primary visual cortex," Nature Communications, Nature, vol. 8(1), pages 1-9, August.
    3. Yoram S. Bonneh & Alexander Cooperman & Dov Sagi, 2001. "Motion-induced blindness in normal observers," Nature, Nature, vol. 411(6839), pages 798-801, June.
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