2006 Heart-Brain summit proceedings

Cortical control of the heart

Stephen Oppenheimer, MD, PhD

The Department of Diagnostic Radiology
Cleveland Clinic
Cleveland, OH

ARTICLE INTRODUCTION

Neuraxial organization of cardiac control can be considered as a series of hierarchically organized oscillatory networks. Some of the oscillatory activity is determined by intrinsic characteristics of the cells themselves, but it may also be related to neural networks that are either situated inside or distributed between specific brain nuclei. The functional rationale for such hierarchical organization is unclear, but this probably permits integration between cardiac neural regulatory elements and extraceptive and intraceptive perceptions, allowing for contextually appropriate response patterning.

The anatomic locations involved in cardiac regulation extend from the spinal cord to the cortex itself.
At the cortical level, the insula has received the most recent attention and this will be the major focus of this article.

CITATIONS

  1. Cechetto DF, Saper CB.
    Evidence for a viscerotopic sensory representation in the cortex and thalamus in the rat. J Comp Neurol 1987; 262:27–45.
    http://www.ncbi.nlm.nih.gov/pubmed/2442207

  2. Oppenheimer SM, Cechetto DF.
    Cardiac chronotropic organization of the rat insular cortex. Brain Res 1990; 533:66–72.
    http://www.ncbi.nlm.nih.gov/pubmed/2085734
  3. Oppenheimer SM, Wilson JX, Guiraudon C, Cechetto DF.
    Insular cortex stimulation produces lethal cardiac arrhythmias: a mechanism of sudden death? Brain Res 1991; 550:115–121.
    http://www.ncbi.nlm.nih.gov/pubmed/1888988
  4. Sander D, Klingelhofer J.
    Changes of circadian blood pressure patterns after hemodynamic and thromboembolic brain infarction. Stroke 1994; 25:1730–1737.
    http://www.ncbi.nlm.nih.gov/pubmed/8073451
  5. Zhang ZH, Rashba S, Oppenheimer SM.
    Insular cortex lesions alter baroreceptor sensitivity in the urethene-anesthestized rat. Brain Res 1998; 813:73–81.
    http://www.ncbi.nlm.nih.gov/pubmed/9824672
  6. Oppenheimer SM, Zhang ZH, Boekholdt M.
    Electrical stimulation of the right posterior insular cortex increases cardiac sympathetic tone in the rat. Soc Neurosci Abstracts 1998; 24:1134.
  7. Oppenheimer SM, Gelb A, Girvin JP, Hachinski VC.
    Cardiovascular effects of human insular cortex stimulation. Neurology 1992; 42:1727–1732.
    http://www.ncbi.nlm.nih.gov/pubmed/1513461
  8. Oppenheimer SM, Kedem G, Martin WM.
    Left-insular cortex lesions perturb cardiac autonomic tone in humans. Clin Auton Res 1996; 6:131–140.
    http://www.ncbi.nlm.nih.gov/pubmed/8832121
  9. Laowattana S, Zeger SL, Lima JAC, Goodman SN, Wittstein IS, Oppenheimer SM.
    Left insular stroke is associated with adverse cardiac outcome. Neurology 2006; 66:477–483.
    http://www.ncbi.nlm.nih.gov/pubmed/16505298