Related Experiment Videos
[Cardiodynamic determinants of heart perception]
M Bestler1, R Schandry, R Weitkunat
1Institut der Psychologie, Universität München.
Zeitschrift Fur Experimentelle Und Angewandte Psychologie
|January 1, 1990
Summary
Perceiving your heartbeat is linked to how much blood your heart pumps (stroke volume) and how forcefully it contracts. These mechanical heart actions, not just heart rate, likely trigger the sensation of a heartbeat.
Area of Science:
- Cardiovascular Physiology
- Somatic Sensory Science
Context:
- Subjective heartbeat perception is influenced by psychological and physiological factors.
- The specific cardiac parameters underlying heartbeat sensation remain unclear.
Purpose:
- To investigate the relationship between cardiac performance and the ability to perceive one's heartbeat.
- To identify the cardiodynamic determinants of cardiac perception.
Summary:
- Sixteen healthy subjects underwent varying cardiac activity through passive tilt and physical exertion.
- Cardiac parameters including stroke volume, contractility, and heart rate were measured alongside cardiac perception tests.
- Significant correlations were found between cardiac perception and stroke volume (r=.62) and contractility (r=.45), but not heart rate (r=.12).
Impact:
- Findings suggest that the subjective perception of a heartbeat is primarily driven by the mechanical properties of the left ventricle, specifically the ejected blood volume and velocity.
- This research provides novel insights into the physiological basis of interoception and cardiac awareness.