Electromyograms of abomasum were recorded on eleven female goats (30-40kg in weight) by using the eight bipolar silver electrodes. The electrodes were chronically sutured on the serosa of abornasum: one in the cardia, three in the fundus and four in the pylorus. The results are summarized as follows:
1. In the area of cardia and fundus, the spike burst was repeated irregularly.
2. In the area of pylorus, the single spike followed by spike burst was repeated regularly and it was recognized that this discharge was ensured from the peristaltic movement of the pylorus.
3. It was considered that the origin of the propagatoin of the discharge from this peristaltic movement was in the pylorus and not in the fundus.