以单向方波脉冲(波宽0.5～1ms,频率40～70HZ,电流强度5～100μA)刺激麻醉家兔下丘脑乳头体核及其周围区域,刺激期间和刺激停止后可引起持续时间较短的以期前收缩为主的心律失常和动脉血压明显升高。离断间脑以上中枢,并保持动脉血压在70毫米汞柱以上的动物,刺激仍可引起心律失常及动脉血压的显著增高,但对于刺激引起的心律失常反应的敏感性比离断高位中枢前对刺激的反应显著降低。 The hypothalamic kytoplasm nucleus and its surrounding area were stimulated by unidirectional square wave pulses (wave length 0.5 ~ 1ms, frequency 40 ~ 70Hz, current intensity 5 ~ 100μA), and the duration of stimulation and the cessation of stimulation could be shortened The premature contraction of arrhythmias and arterial blood pressure was significantly higher. Stimulation continued to cause arrhythmias and arterial blood pressure to rise significantly from the midbrain to the midbrain and to maintain arterial blood pressure above 70 mmHg, but was more sensitive to stimulation-induced arrhythmia than to severed high center The response to the stimulus was significantly reduced.