Figure 8: Antegrade (APWs) and retrograde (RPWs) propagating pressure waves.
From: Intraluminal pressure patterns in the human colon assessed by high-resolution manometry
(A) An APW in a one min section, which is an enlargement from the bracketed section in the 10 min recording. Recording is from a control subject. Sensor P36 is 70 cm from anal verge. (B) RPWs from the same individual but recorded after the meal.
