Figure 2.

 Sensory thresholds (mean (SEM)) for rectal fullness (A), defecatory urge (B), and discomfort (C) during the distension sequences before stress (1), during stress (2), and after stress (3) in series I experiments in patients and controls. Thresholds were increased in controls during stress compared with before and after. In patients, only thresholds after stress differed from the stress period. *p<0.05 **p<0.01.