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Claustrum modulation drives altered prefrontal cortex dynamics and connectivity.

Ryan Zahacy1, Yonglie Ma2, Ian R Winship1,2

  • 1Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada.

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|November 23, 2024
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Summary
This summary is machine-generated.

The claustrum (a brain region) influences cortical activity and large-scale brain networks. Modulating claustrum activity alters prefrontal cortex function and sensory responses, highlighting its role in neural communication.

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Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Systems Neuroscience

Background:

  • The claustrum is a poorly understood subcortical structure.
  • Its precise role in modulating cortical activity and large-scale brain networks remains unclear.

Purpose of the Study:

  • To investigate the claustrum's influence on spontaneous and sensory-evoked cortical network activity.
  • To determine how claustrum modulation affects prefrontal cortex activity and long-range functional connectivity.

Main Methods:

  • Mesoscale calcium imaging in anesthetized mice.
  • Chemogenetic manipulation using Gi and Gq DREADDs to alter claustrum activity.

Main Results:

  • Decreasing claustrum activity enhanced prefrontal cortical activity; activation reduced it.
  • Claustrum modulation altered large-scale functional brain networks and long-range cortical connectivity.
  • Claustrum inhibition increased local frontal cortex coupling but decreased long-range correlations, while enhancing visual cortex sensory responses.

Conclusions:

  • The claustrum plays a significant role in orchestrating neural communication across cortical regions.
  • Claustrum activity modulates prefrontal cortex function, large-scale network dynamics, and sensory processing.
  • The claustrum is a key node for regulating large-scale cortical dynamics.