Lynch, J. J., Thomas, S. A., Paskewitz, D. A. et al. 1977. Human contact and cardiac arrhythmia in a coronary care unit. Psychosomatic Medicine 39, 188-192.

In a sample of 225 coronary care patients it was observed that a significant reduction in ventricular arrhythmias occurred following pulse palpation. These data suggest that significant changes in ventricular arrhythmia can occur as a result of even minimally arousing psychosocial interactions.