In dogs with electrodes implanted in fundal gastric branch and with the stomach fistula, the spontaneous bioelectric activity in the n. vagus increased when the periodical motoric action of the stomach occurred. The injection of morphin (0.07 mg/kg) increased the vagal efferent impulses and caused a marked contraction of the stomach. The influence of high external temperature (42 degrees C for an hour) upon the experimental animals decreased the efferent discharges in the n. vagus and suppressed the motor activity of the stomach.
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