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首页> 外文期刊>American Journal of Orthodontics and Dentofacial Orthopedics >Inhibition of masseteric electromyographic activity during oral respiration.
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Inhibition of masseteric electromyographic activity during oral respiration.

机译：抑制口腔呼吸过程中的咬肌肌电活动。

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摘要

Although the effects of oral respiration on the growth and development of craniofacial structure have been studied previously, little is known about how altered respiration affects the activity of the jaw-closing muscles. Obstruction of the nasal airway in the cat significantly inhibited the masseteric stretch reflex and discharges of masseteric motor units but did not affect the electromyographic activity of the diaphragm. This inhibition was greater during inspiration than during expiration. In addition, the amplitude of the masseteric monosynaptic reflex elicited by electrical stimulation of the mesencephalic trigeminal nucleus showed no significant change in association with the altered respiratory mode. These findings suggest that masseteric electromyographic activity is inhibited during oral respiration and that the gamma-system is involved in this inhibition.
机译：尽管以前已经研究了口腔呼吸对颅面结构生长和发育的影响，但是关于呼吸变化如何影响下颌肌肉活动的了解甚少。猫的鼻气道阻塞显着抑制了咬肌伸展反射和咬肌运动单位的放电，但不影响隔膜的肌电图活动。吸气期间的这种抑制大于呼气期间的这种抑制。另外，中脑三叉神经核的电刺激引起的咬肌单突触反射的幅度与呼吸模式的改变没有显着变化。这些发现表明，在口腔呼吸过程中，咬肌肌电活动受到抑制，并且γ系统参与了这种抑制作用。

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