It has been shown that after cerebellectomy or electrical stimulation of the cerebellum in the fish the motor activity of its stomach undergoes significant changes. From the 1st to the 5th day after cerebellectomy, the frequency and amplitude of the stomach contractions decrease. These indices return to the initial level only to the 7th day after the operation. Electrical stimulation of the cerebellum decreases the frequency, but not the amplitude of the stomach contractions. These changes take place within the 1st hour after stimulation. Electrical stimulation of the skin of the head of the fish does not affect motor activity of the stomach.
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