Sustained mental stress alters human jejunal motor activity.

Abstract
The effect of prolonged mental stress on upper small bowel motility was studied in 11 healthy, medical students using a pressure-sensitive radio-pill. During 8 h of continuous observation, subjects were stressed for 4 h with a modified dichotomous listening test. During the 1st 2 h of stress, inhibition of fasting motor complexes occurred and this effect was marked in the 7 subjects who showed an appreciable cardiovascular response to stress.