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. 2019 Jul 11;16(9):559–579. doi: 10.1038/s41575-019-0167-1

Fig. 8. Assessment of colonic motility using a barostat.

Fig. 8

The barostat–manometric assembly is positioned in the descending colon with a polyethylene balloon in apposition to the colonic mucosa. The device maintains the balloon at a pressure that ensures that the colonic wall is not distended. Contractions of the colonic wall induce a decrease in the baseline balloon volume, which is recorded by the barostat.