Interareal Oscillatory Synchronization in Top-Down Neocortical Processing

Curr Opin Neurobiol. 2015 Apr;31:62-6. doi: 10.1016/j.conb.2014.08.010. Epub 2014 Sep 15.

Abstract

Top-down processing in the neocortex underlies important cognitive functions such as predictive coding and attentional set. We review evidence indicating that top-down neocortical processes are carried by interareal synchrony, particularly in the beta frequency band. We hypothesize that top-down neocortical signals in the beta band convey behavioral context to low-level sensory neurons. We further speculate that large-scale distributed networks, self-organized at the highest hierarchical levels, are the source of top-down signals in the neocortex.

Publication types

  • Review

MeSH terms

  • Animals
  • Beta Rhythm / physiology*
  • Cortical Synchronization / physiology*
  • Electroencephalography
  • Humans
  • Neocortex / physiology*
  • Nerve Net / physiology*