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April 16, 2026Psychological Review2 citationsOpen Access

Spiking the mind: Rethinking the role of cortical feedback in visual mental imagery.

RKRoger Koenig‐RobertTPThomas PaceJPJoel Pearson

Key Points

  • The aim is to clarify the role of cortical feedback in visual mental imagery and its interaction with perception.
  • Review of current literature on feedback mechanisms in visual imagery
  • Interpretation of neural correlates and functional effects
  • Development of a new hypothesis about feedback's role
  • Feedback connections modulate sensory areas, often via negative gain control.
  • Imagery may reshape spontaneous neural activity rather than just stimulating spiking.
  • New framework offers insights into properties of visual imagery and feedback.

Abstract

Recent research has revealed similarities between visual mental imagery and visual perception. Visual imagery is supported by cortical feedback involving multiple visual areas, including the primary visual cortex, and functionally interacts with perception. This has led to the assumption that imagery is "perception in reverse," with feedback connections driving action potentials in early visual areas. However, evidence on feedback mechanisms is mixed, often exerting modulation (often as negative gain control) in sensory areas. Here, we examine and interpret the current understanding of feedback mechanisms related to visual imagery, integrating this with its functional effects and neural correlates. Finally, we put forward a new hypothesis, along with testable predictions, proposing that imagery reshapes spontaneous neural activity rather than producing spiking in early visual areas. This new framework explains many of the properties of visual imagery while providing a better general understanding of feedback and brain function. (PsycInfo Database Record (c) 2026 APA, all rights reserved).

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Cite This Study

Koenig‐Robert et al. (2026) studied this question.

synapsesocial.com/papers/69e07bc12f7e8953b7cbd634https://doi.org/10.1037/rev0000621
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