Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Sep 20;9:1248. doi: 10.3389/fphys.2018.01248

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2018 Chen, Parsons, Shokrollahi, Wan, Vincent, Yuan, Pervez, Chen, Xue, Zhang, Eshtiaghi, Armstrong, Bercik, Moayyedi, Greenwald, Ratcliffe and Huizinga.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Simultaneous Pressure Waves in response to a meal. (A) SPWs that span the entire colon (102 cm). The lighter area, between ∼4 and 12 min, is the time period where the subject sits up causing an increase in intraluminal pressure, and takes in the meal. In this subject, a meal did not induce HAPWs but relatively high amplitude SPWs associated with liquid expulsion. An SPW appeared just before (anticipating the meal) and two following the meal. Anal sphincter relaxations were part of the SPW activity and the SPWs were consistently preceded by relatively low amplitude proximal propagating pressure waves. In addition, a lot of segmenting activity occurred. No pressure waves appeared in the time period between the end of balloon distention and the start of meal intake which was 20 min, except for the one just 1 min before meal intake. All three SPWs were associated with liquid outflow. (B) A 3D rendition of (A). (C) 3D image of an SPW.