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Related Experiment Video

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Revealing Neural Circuit Topography in Multi-Color
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Topological Maps and Brain Computations From Low to High.

Martin I Sereno1,2, Mariam Reeny Sood2, Ruey-Song Huang3

  • 1Department of Psychology, San Diego State University, San Diego, CA, United States.

Frontiers in Systems Neuroscience
|June 24, 2022
PubMed
Summary

This study maps visual, auditory, and somatomotor cortex in humans, revealing how brain activity patterns may dynamically assemble complex information for perception and action.

Keywords:
cortical computationextrastriate cortexretinotopyserial assembly of contentsomatotopytonotopy

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Computational Neuroscience

Background:

  • Microelectrode studies reveal topological maps in mammalian sensory cortices.
  • Significant portions of human neocortex contain organized visual, auditory, and somatomotor maps.

Purpose of the Study:

  • To present a new parcellation and movie atlas of human cortical maps.
  • To explore moveable map phenomena and cortical activity patterns during sensorimotor actions.
  • To hypothesize how localized activity patterns might support complex cognitive functions.

Main Methods:

  • Review of microelectrode study data from primates and other mammals.
  • Development of a new parcellation and movie atlas of cortical area maps using FreeSurfer.
  • Analysis of studies on moveable map phenomena and traveling wave/bump activity.

Main Results:

  • Characterization of differences in topological maps across sensory modalities.
  • Presentation of a novel parcellation and atlas for human cortical maps.
  • Evidence for spatially coherent traveling wave and bump activity during sensorimotor actions.

Conclusions:

  • Human neocortex features extensive topological sensory and motor maps.
  • Cortical activity may involve dynamic, spatially organized patterns.
  • These patterns could potentially support complex cognitive processes like scene and language comprehension.