[Computer analysis of gastric and duodenal potentials in dogs].

In this report, it was intended to analyze gastric and duodenal action potentials with use of the medical computer. Ten mongrel dogs weighing about 10 kg were used for the experiments. Under the anesthesia with pentotal sodium administered intravenously or intraperitoneally, abdominal cavity was opened. Bipolar platinum-electrodes were implanted into subserosal tissue of the antrum for the recording of action potentials of the stomach. After the transverse incision and re-anastomosis of the anterior wall of the duodenum at the mid-point between the pyloric ring and ampulla of Vater, two bipolar electrodes were implanted on both side of the anastomosed line, respectively. For recording of the action potentials,' TIAC R-351' was used. ' Interval histogram' and' distribution histogram' of data were made with medical computer 'ATAC 501-20'. 1) It was shown that intervals were distributed between about 12 to 14 seconds by non-sequential interval histogram of gastric action potentials.