21.   Even when abnormalities of colonic motor function are identified, it is not clear whether they are responsible for the symptoms.

22.   Thus research into colonic motor function remains a challenging and potentially rewarding area where progress has been facilitated by recent technological advances.

23.   Chronic idiopathic intestinal pseudoobstruction is a disorder of motor function of the gastrointestinal tract as a result of disease of enteric nerves or smooth muscle cells.

24.   The effects of serotonin on gastrointestinal motor function are generally believed to be mediated through myenteric plexus neurons.

25.   Most patients showed a persistent improvement in anal motor function.

26.   This may explain the finding of normal anal motor function in many incontinent patients.

27.   The motor function of the sphincter seemed to be persistently improved in patients regaining continence, but not in poor responders.

28.   It is unclear why some patients apparently lose the improvement in motor function gained during biofeedback sessions.

29.   Acid clearance time is a useful parameter of impaired oesophageal motor function.

30.   Thus, acid clearance times can be used to assess the impairment of the oesophageal motor function in PSS.