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A. One short pulse (0.3ms) followed with a long pulse (400ms) with an interval of 100ms between the short pulse and long pulse, amplitude of 2mA and repeated at the frequency of the intrinsic gastric slow waves. B. Increase the number of short pulse to five (width of 0.3ms, frequency of 40 Hz). The interval between the last short pulse and the long pulse was 100ms.
