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Visceromotor response (VMR) detected by recording of EMG in response to colorectal distention (CRD) 3 days (A) and 7 days (B) after a 1-time colon distention (CD) at 40 mmHg for 40 min. N = 5 or 6. *P < 0.05 vs. the baseline level before the tonic distention (Ctr).
