Mameli O, Tolu E
Physiol Behav. 1986;37(5):773-5. doi: 10.1016/0031-9384(86)90183-6.
This paper describes preliminary observations on vestibular ampullar involvement in the control mechanism of the hypoglossal nucleus activity. Thermic stimulation of the labyrinth, performed by irrigating the external auditory meatus with cold water (20 degrees C), significantly modified the spontaneous electrical activity of hypoglossal neurons localized in the medio-caudal part of the nucleus. Tonic spontaneous discharge of the units following labyrinthine stimulation was modified into a phasic activity and bursts with multi-unit recruitment appeared. This modified activity was observed during 5-6 minutes after the onset of ear irrigation. Similar response patterns, but with shorter duration, were recorded following contralateral stimulation of the labyrinth. These results show that hypoglossal neurons are triggered by the vestibular system following dynamic conditions in response to every spatial head displacement.
本文描述了关于前庭壶腹参与舌下神经核活动控制机制的初步观察结果。通过用冷水（20摄氏度）冲洗外耳道来进行迷路的热刺激，显著改变了位于舌下神经核中尾部的舌下神经元的自发电活动。迷路刺激后，单位的紧张性自发放电转变为相位活动，并出现多单位募集的爆发。在耳部冲洗开始后的5 - 6分钟内观察到这种改变的活动。对侧迷路刺激后记录到类似的反应模式，但持续时间较短。这些结果表明，在前庭系统响应每次头部空间位移的动态条件下，舌下神经元会被触发。
