Honda K, Yanagimoto M, Negoro H, Narita K, Murata T, Higuchi T
Department of Physiology, Fukui Medical University, Matsuoka, Japan.
Brain Res Bull. 1999 Feb;48(3):309-13. doi: 10.1016/s0361-9230(98)00180-4.
In urethane-anaesthetized male rats, electrical stimulation of the dorsal penile nerve (DPN) excited 29 of 48 (60%) oxytocin cells in the contralateral supraoptic nucleus, whereas only 5 of 28 (18%) vasopressin cells were excited by the stimulation. The stimulus applied to the ipsilateral DPN to the recorded neurone also excited a similar proportion of oxytocin cells (25 of 43; 58%). Tactile stimulation of the glans penis excited 7 of 12 (58%) oxytocin cells, whereas the same stimulation excited only 3 of 16 (19%) vasopressin cells. The results suggest that sensory information arising from the penis preferentially excites oxytocin cells in the supraoptic nucleus.
在氨基甲酸乙酯麻醉的雄性大鼠中，电刺激阴茎背神经（DPN）可兴奋对侧视上核中48个催产素细胞中的29个（60%），而刺激仅兴奋了28个加压素细胞中的5个（18%）。施加于记录神经元同侧DPN的刺激也兴奋了相似比例的催产素细胞（43个中的25个；58%）。对阴茎头的触觉刺激兴奋了12个催产素细胞中的7个（58%），而相同刺激仅兴奋了16个加压素细胞中的3个（19%）。结果表明，来自阴茎的感觉信息优先兴奋视上核中的催产素细胞。
