From Julia web site:Motility StudiesELECTROGASTROGRAPHYThis test, or EGG as it is also called, is much like an EKG for the heart. Surface electrodes are pasted on the skin over the stomach and the electrical activity of the stomach is recorded. Abnormalities such as a fast rate, a slow rate or an irregular rate can be detected. If an abnormal pattern is detected, your doctor may be able to put on a drug to correct it.SMALL BOWEL MOTILITY In order to measure motility in the small bowel, a small tube must be placed into the small intestine via the mouth. Motility (i.e. contractions and relaxation) of the small bowel can then be measured. In the future, we may also be able to measure the electrical activity of the small intestine also. Again, this knowledge will enable you doctor to "tailor" therapy for your specific problem.