Sumi T
Jpn J Physiol. 1977;27(4):391-8. doi: 10.2170/jjphysiol.27.391.
In rabbits, lightly anesthetized with ether, tetanic stimulation of the superior laryngeal nerve (SLN) displaced the jaw toward opening and reduced the amplitude of cortically evoked rhythmic jaw movements. With increased intensity of stimulus, the effects became remarkable and the opened jaw movement ultimately ceased. Reflex swallowing in reaction to weak electrical stimuli of SLN or to a small amount of water squirted into the oropharynx yielded a brief and instantaneous cessation of rhythmic jaw movements with the jaw open. Strong electrical stimuli to the nerve or a squirt of relatively large amount of water into the oropharynx prolonged the duration of both swallowing and the cessation of rhythmic jaw movements for about 1.0 sec. Reflex swallowing yielded a burst of activity for about 300 msec in the mylohyoideus and silence for a longer period in the masseter. Spontaneous activity of the masseter was moderately decreased during the nerve stimulation and, when swallowing occurred, this decrease became prominent for a short period.
在经乙醚轻度麻醉的兔子中，对上喉神经（SLN）进行强直刺激会使下颌向张开方向移动，并降低皮质诱发的节律性下颌运动的幅度。随着刺激强度的增加，这些效应变得显著，最终张开的下颌运动停止。对SLN进行弱电刺激或向口咽喷射少量水引发的反射性吞咽，会导致下颌张开时节律性下颌运动短暂且瞬间停止。对神经进行强电刺激或向口咽喷射相对大量的水，会使吞咽和节律性下颌运动停止的持续时间延长约1.0秒。反射性吞咽在颏舌骨肌中产生约300毫秒的活动爆发，而在咬肌中则有更长时间的静息。在神经刺激期间，咬肌的自发活动适度降低，而当发生吞咽时，这种降低在短时间内变得更加明显。
