Gimpl M P, Brickman A L, Kaufman M P, Schneiderman N
Am J Physiol. 1976 Jun;230(6):1480-6. doi: 10.1152/ajplegacy.1976.230.6.1480.
Electrical stimulation of anterior or posterior hypothalamus with 10-s trains elicited heart rate and blood pressure decreases. Presentation of anterior hypothalamic stimulation coincident with or 5, 10, or 15 s prior to 5-s train stimulation of aortic nerve (AN) summated with depressor-decelerator responses to AN stimulation. The summating effect was more pronounced for heart rate than for blood pressure. Simultaneous onset of AN and posterior hypothalamic stimulation did not influence AN responses. In contrast, when AN stimulation was delayed until 5, 10, or 15 s after onset of posterior hypothalamic stimulation, small, moderate, and full attenuation of AN responses occurred, respectively. Since AN and posterior hypothalamic stimulation each led to depressor-decelerator responses, attenuation of AN responses cannot be attributed to simple summation of cardiovascular responses elicited by intracranial and aortic nerve stimulation.
用10秒的串刺激下丘脑前部或后部会引起心率和血压下降。在对主动脉神经（AN）进行5秒串刺激之前5、10或15秒或与之同时进行下丘脑前部刺激，会与对AN刺激的降压-减速反应相加。心率的相加效应比对血压更明显。同时开始AN和下丘脑后部刺激不会影响AN反应。相反，当AN刺激延迟至下丘脑后部刺激开始后5、10或15秒时，AN反应分别出现小、中和完全衰减。由于AN和下丘脑后部刺激各自都会导致降压-减速反应，AN反应的衰减不能归因于颅内和主动脉神经刺激所引发的心血管反应的简单相加。
