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以单向矩形波脉冲(脉宽0.5～1ms,频率40～70Hz,电流强度100～300μa,A)刺激麻醉家兔下丘脑乳头体核及其周围区域,可以诱发以期前收缩为主要特征的心律失常和动脉血压明显升高。维持兔动脉血压处于不同水平。当动脉血压在较高水平时,刺激下丘脑乳头体区域所诱发的期前收缩明显增多;当动脉血压处于较低水平时,刺激所诱发的期前收缩显著减少,动脉血压的高低与刺激所诱发的心律失常之间有显著的正相关关系。
A one-way rectangular wave pulse (pulse width 0.5 ~ 1ms, frequency 40 ~ 70Hz, current intensity 100 ~ 300μa, A) stimulated the hypothalamic nucleus and its surrounding area in anesthetized rabbits, can induce premature rupture as the main characteristics of the heart rhythm Disorders and arterial blood pressure were significantly higher. Maintain rabbit arterial blood pressure at different levels. When the arterial blood pressure at a high level, stimulation of the hypothalamic area of the nipple induced significant increase in premature contractions; when the arterial blood pressure at a low level, the stimulus induced contraction was significantly reduced, the level of arterial blood pressure and stimulation There was a significant positive correlation between induced arrhythmias.