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Cortical modulation of the cardiovascular system

A J Verberne1, N C Owens

  • 1University of Melbourne, Department of Medicine, Austin and Repatriation Medical Centre, Heidelberg, VIC, Australia. tonyv@austin.unimelb.edu.au

Progress in Neurobiology
|March 3, 1998
PubMed
Summary

The cerebral cortex, specifically the medial prefrontal cortex (MPFC) and insular cortex (IC), influences cardiovascular control. These brain regions modulate blood pressure and heart rate through connections with lower brain centers.

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Area of Science:

  • Neuroscience
  • Cardiovascular Physiology

Background:

  • Cortical modulation of cardiovascular control is a long-recognized phenomenon.
  • Recent research systematically examines the mechanisms of cortical influence on circulatory function.

Purpose of the Study:

  • To review the role of specific cortical regions, including the medial prefrontal cortex (MPFC) and insular cortex (IC), in central cardiovascular control.
  • To explore the anatomical and functional connections between these cortical areas and cardiovascular regulatory centers.

Main Methods:

  • Review of anatomical investigations, lesion studies, and electrophysiological research.
  • Examination of cortical connections with hypothalamic, midbrain, pontine, and medullary cardiovascular centers.
  • Analysis of how MPFC and IC influence cardiovascular reflexes and sympathetic vasomotor tone.

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Main Results:

  • The MPFC and IC are anatomically connected to key cardiovascular control regions.
  • Lesions in MPFC and IC affect cardiovascular reflexes (e.g., baroreceptor reflex) and conditioned responses.
  • Cortical regions influence sympathoexcitatory vasomotor neurons, altering sympathetic tone.

Conclusions:

  • Specific cortical areas, notably the MPFC and IC, play a significant role in central cardiovascular regulation.
  • The IC receives visceral sensory input, while the MPFC connects with limbic and sympathetic control structures.
  • Cortical modulation of circulation may underlie cardiovascular aspects of various conditions and behavior-specific responses.