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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
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A retinotopic code structures the interaction between perception and memory systems.

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Summary
This summary is machine-generated.

Retinotopic coding at the brain's apex structures interactions between memory and perception networks. This neural organization supports dynamic interplay between internally oriented recall and externally oriented perception.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Brain Organization

Background:

  • Conventional models posit abstract, amodal coding at the cortical apex for internal information.
  • Recent findings indicate retinotopic coding, even in the default mode network, at the cortical apex.
  • The functional role of this apex retinotopic coding remains unclear.

Purpose of the Study:

  • To investigate the functional role of retinotopic coding at the cortical apex.
  • To determine how retinotopic coding influences interactions between mnemonic and perceptual brain systems.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was employed.
  • Analysis focused on category-selective memory and perceptual areas at the cortical apex and high-level visual cortex.

Main Results:

  • Robust inverted (negative) retinotopic coding was observed in category-selective memory areas at the cortical apex.
  • This was functionally linked to positive retinotopic coding in category-selective perceptual areas.
  • These linked populations showed spatially specific opponent responses during both perception and recall, indicating mutual inhibition.

Conclusions:

  • Retinotopic coding at the cortical apex structures interactions between mnemonic and perceptual neural systems.
  • This organization provides a scaffold for the dynamic interplay between memory and perception.
  • The findings challenge conventional views of abstract amodal coding at the brain's highest levels.