用同心圆电极刺激兔的缰核，可迅速引起一系列躯体、植物性反应，表现为血压升高，瞳孔扩大，耳血管收缩，心输出量、肢体血流量曾加，未麻痹的动物还可出现四肢爬动，竖耳等行为效应。实验结果表明，兴奋缰核引起的心血管效应属于防御反应。 With concentric electrodes to stimulate the rabbit’s hamster, can quickly lead to a series of somatic and plant reactions, manifested as elevated blood pressure, pupil dilatation, ear vasoconstriction, cardiac output, extremity blood flow had increased, non-paralyzed animals can Appeared limbs crawl, erect ears and other behavioral effects. The experimental results show that the cardiovascular effect caused by the excited habenula is a defensive response.