Cardiovascular asymmetries and cardiac perception.

Area of Science:

• Neuroscience
• Cardiology
• Cognitive Psychology

Background:

• Cardiac sensory information processing is crucial for interoception.
• Understanding the lateralization of cardiac perception remains an area of active research.

Purpose of the Study:

• To review strategies for evaluating the lateral specificity of cardiac sensory innervation.
• To investigate the role of the right hemisphere in heartbeat perception.

Main Methods:

• Review of electrophysiological recordings of cardiac-relevant cortical activity.
• Behavioral assessment of cardiac sensory perception differences between the right and left sides.
• Analysis of cerebral lateral preference using conjugate lateral eye movements.

Main Results:

• Electrophysiological data indicate a link between cardiac events and right-hemisphere cortical responses.
• Behavioral experiments reveal a complex relationship between cerebral lateral preference, arousal, and heartbeat perception accuracy.
• Overall data suggest specific involvement of the right hemisphere in heartbeat perception.

Conclusions:

• The right hemisphere plays a specific role in the perception of cardiac sensory information.
• Cerebral lateralization influences the accuracy of self-perception of heartbeats.
• Further research is warranted to fully elucidate the neural mechanisms of cardiac interoception.