Mameli O, Tolu E, Melis F, Caria M A
Institute of Human Physiology, School of Medicine, University of Sassari, Italy.
Brain Res Bull. 1988 Jan;20(1):83-8. doi: 10.1016/0361-9230(88)90011-1.
Evoked potentials and responses of single hypoglossal neurons were recorded in response to electrical stimulation of the labyrinth. In addition, the spontaneous electrical activity of hypoglossal neurons was significantly modified in response to ipsi- and contralateral static tilt of the whole animal and thermic stimulation of the labyrinth. The experiment showed that the labyrinth modulates the electrical activity of hypoglossal neurons with phasic inputs in response to ampullar stimulation and with tonic inputs in response to macular stimulation. The vestibular phasic influence of hypoglossal neurons represents the most adequate functional pattern to obtain a quick, short lasting response of the tongue muscles instantly modifiable with every abrupt head displacement. On the contrary, the vestibular tonic influence of hypoglossal neurons represents the most adequate functional pattern to obtain not only adjustment but also maintenance of the muscular lingual response to static displacement of the head.
记录了对迷路进行电刺激时舌下神经单个神经元的诱发电位和反应。此外，在整个动物进行同侧和对侧静态倾斜以及对迷路进行热刺激时，舌下神经神经元的自发电活动也有显著改变。实验表明，迷路通过壶腹刺激的相位输入和黄斑刺激的紧张性输入来调节舌下神经神经元的电活动。舌下神经神经元的前庭相位影响代表了最适当的功能模式，以获得舌肌对每次突然头部位移可立即改变的快速、短暂的反应。相反，舌下神经神经元的前庭紧张性影响代表了最适当的功能模式，不仅可获得对头部静态位移的肌肉舌反应的调整，还可维持该反应。
