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The claustrum: Considerations regarding its anatomy, functions and a programme for research.

Christopher M Dillingham1, Maciej M Jankowski2, Ruchi Chandra1

  • 1Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.

Brain and Neuroscience Advances
|March 14, 2020
PubMed
Summary

The claustrum, a brain region with extensive connections, is explored for its role in consciousness and cortical activity. Recent research suggests a need to redefine its anatomical boundaries in rodents.

Keywords:
Claustrumanatomical connectionsconsciousnessfunctionsubcortical

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Area of Science:

  • Neuroscience
  • Brain Structure and Function

Background:

  • The claustrum is a conserved yet poorly understood brain structure with widespread connections.
  • It is theorized to be involved in consciousness, cortical activity orchestration, spatial processing, and decision-making.

Purpose of the Study:

  • To review recent advances in claustrum research.
  • To present evidence prompting a reevaluation of rodent claustrum anatomical boundaries.

Main Methods:

  • Selective review of anatomical, electrophysiological, and behavioral studies.
  • Analysis of experimental data on claustrum function and connectivity.

Main Results:

  • Recent studies provide new insights into claustrum's connectivity and potential functions.
  • Evidence suggests current anatomical definitions of the rodent claustrum may be inaccurate.

Conclusions:

  • The claustrum's complex connectivity supports its proposed roles in higher cognitive functions.
  • Further research is needed to clarify its precise anatomical borders and functional significance.