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Perception of phasic activity of the proximal stomach. Combined barostat of the proximal stomach and antroduodenal manometry in a healthy volunteer. The highest trace represents perception score. The second and third traces shows intraballoon pressure and volume, respectively. The six other traces represent antroduodenal manometry. This tracing illustrates fundic pressure waves propagated or not to the antrum. Some of the fundic pressure waves were identified by the volunteer.
