アブストラクト（27巻1号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Modulation of facial nerve discharge by somatic sensory inputs from the peri-oral area in the rat
Subtitle　： Selective Proceedings of 33rd General Meeting of Kanagawa Odontological Society, 1998
Authors　： Junzo Mizuno, Noriyuki Yuyama, Kenji Tamura
Authors（kana）　：
Organization　： Department of Oral Physiology, Kanagawa Dental College
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 27
Number　： 1
Page　： 82-84
Year/Month　： 1999 / 3
Article　： Report
Publisher　： Kanagawa Odontological Society
Abstract　： [ABSTRACT] To evaluate the role of somatic sensory inputs from the peri-oral area in the formation of rhythmic activities of the lip muscle (the orbicularis oris muscle; OO), we analyzed electrical activity of the facial nerve efferents that innervated the OO muscle. More than a half of the functional single units of the facial nerve were silent to a tactile stimulation applied to the surface of the lips: Among the rest, most of the units innervating the upper part of the lip muscle increased action potential discharges in response to the upper lip stimulation. In contrast, fibers innervating the lower part of the lip muscle decreased their spontaneous discharges by a tactile stimulation of the same area. It is suggested that somatic sensory inputs from the peri-oral area may modulate rhythmical contractions of the OO muscle that occur during chewing and drinking.
Practice　： Dentistry
Keywords　： Orbicularis Oris muscle, Central pattern generator, Trigeminal nerve afferents, Facial nerve efferents