麻醉兔下丘脑刺激引起的下颌反射变化。

Changes in jaw reflexes by stimulation of the hypothalamus in anesthetized rabbits.

作者信息

Inoue M, Nozawa-Inoue K, Miyaoka Y, Yamada Y

机构信息

Division of Oral Physiology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, 951-8514, Niigata, Japan.

出版信息

Neurosci Res. 2001 Sep;41(1):61-5. doi: 10.1016/s0168-0102(01)00260-7.

DOI:10.1016/s0168-0102(01)00260-7

PMID:11535294

Abstract

Changes in the masseteric monosynaptic reflex (MMR) and jaw-opening reflex (JOR) responses resulting from conditioning stimulation in the hypothalamus were studied in anesthetized rabbits. Stimulation of the lateral hypothalamus evoked a facilitation of the MMR and an inhibitory or facilitatory effect on the JOR. The facilitatory effect on JOR was stronger than that on the MMR. The facilitatory effective site for the JOR was in the dorsal and lateral directions as compared to the inhibitory field. The results suggest two functionally distinct regions in the lateral hypothalamus that separately project to the jaw-opening muscles.

摘要

在麻醉兔中研究了下丘脑条件刺激引起的咬肌单突触反射（MMR）和张口反射（JOR）反应的变化。刺激下丘脑外侧诱发了MMR的易化以及对JOR的抑制或易化作用。对JOR的易化作用比对MMR的更强。与抑制场相比，JOR的易化有效部位在背侧和外侧方向。结果提示下丘脑外侧存在两个功能不同的区域，它们分别投射到张口肌。