Henry Parkman is the Vice Chair of Research, Department of Medicine Professor and Medicine Director at the GI Motility Laboratory at the Lewis Katz School of Medicine. His main areas of research include the use of multichannel electrogastrography to assess gastric myoelectrical activity to detect gastric motor function in patients with dyspeptic symptoms. He has developed a noninvasive test to measure simultaneously both gastric emptying and gastric volume after ingestion of a solid meal under physiologic conditions which is useful in defining the pathophysiologic factors which cause symptoms in patients with functional dyspepsia and be useful to test the effects of new pharmaceutical agents. He is also investigating gastric motility, breath tests for gastric emptying, electrogastrography (EGG), new pharmaceutical treatments for gastroparesis and functional dyspepsia, small bowel motility recordings, esophageal pH and motility recordings.