Figure 6.

Example of orbit plot at the anal end of the fully distended colon. The measurement for line plots, pressure, and diameter in (B) and the orbit plot in (C) have been taken from the white line in the diameter/pressure spatiotemporal map in (A). Segment 1 of the plot shows a period of increasing pressure with little change in diameter (passive isometric pressure increase). Segment 2 of the plot shows the reduction in pressure with little change in diameter (passive isometric pressure decrease). These two states are described in Figure 3E.