Kamogawa H, Hanashima N, Naito K, Kagaya K
Department of Physiology, Nihon University School of Dentistry, Tokyo, Japan.
Neurosci Lett. 1988 Dec 19;95(1-3):149-54. doi: 10.1016/0304-3940(88)90648-9.
Location and axonal projection of interneurons presumed to mediate disynaptic inhibition evoked from the trigeminal sensory nerve in the ipsi- and contralateral masseter motoneurons were studied in pentobarbital anesthetized cats. Neurons monosynaptically excited from the periphery and antidromically activated from the contralateral trigeminal motor nucleus at low current intensity, hence probably terminating there, were found in the supratrigeminal region. Intracellular staining of such cells revealed collaterals terminating in the ipsilateral masseter motor nucleus. It is suggested that both the crossed and uncrossed disynaptic inhibition of masseter motoneurons are at least in part relayed by the same neurons in the supratrigeminal region.
在戊巴比妥麻醉的猫中，研究了假定介导同侧和对侧咬肌运动神经元中由三叉神经感觉神经诱发的双突触抑制的中间神经元的位置和轴突投射。在三叉上区发现了在低电流强度下从外周单突触兴奋并从对侧三叉神经运动核逆向激活的神经元，因此这些神经元可能在此处终止。对这些细胞进行细胞内染色显示，其侧支终止于同侧咬肌运动核。提示咬肌运动神经元的交叉和不交叉双突触抑制至少部分是由三叉上区的同一神经元中继的。
