Several techniques are currently applied to study normal and pathological gastric motility and gastric emptying, but they measure or evaluate only a few of the various aspects. For example, the barostat technique is considered the gold standard for evaluation of proximal gastric motor function, including gastric accommodation [19]. Accommodation of the stomach wall is considered to be a vagally mediated reflex that causes the stomach wall to relax in response to a meal that has been consumed and acts as both a chemical and a mechanical stimulus. Gastric accomodation results in a reduction of gastric wall tone, which gives the stomach the opportunity to distend, providing a reservoir for the meal [7]. Disadvantages of the barostat technique are the invasive nature requiring oral intubation with intragastric positioning of a polyethylene bag. Moreover, questions have been raised about possible interference of the barostat with gastric physiology [11, 14, 17], since it could act as a mechanical stimulus itself. Recognition of these characteristics may contribute to the diagnosis of motility disorders.