Mameli O, Tolu E
Exp Neurol. 1986 Dec;94(3):757-66. doi: 10.1016/0014-4886(86)90253-0.
Our results showed that hypoglossal neurons localized in the mediocaudal part of the XIIth nucleus modulate their firing in relation to somatosensory information travelling along the forelimb nerves. Large evoked potentials and responses of single hypoglossal units were recorded during electrical stimulation of the common radial nerve of both sides. A spinohypoglossal pathway has not been described before, but our results indicate this possibility. The latencies of the hypoglossal responses to somatosensory stimulation suggest that somatic afferent volleys may stop at the reticular level and contact the XIIth nucleus through a spinoreticulohypoglossal pathway. Previous work showed that visual and vestibular input contact the same mediocaudal region of the hypoglossal nucleus. Thus it is possible that the postural arrangement of the tongue is subject to a complex control depending on the vestibular, visual, and somatosensory system.
我们的研究结果表明，位于舌下神经核中尾部的舌下神经元会根据沿前肢神经传播的体感信息来调节其放电。在双侧桡总神经电刺激期间，记录到了大的诱发电位和单个舌下神经单元的反应。之前尚未描述过脊髓-舌下神经通路，但我们的结果表明了这种可能性。舌下神经对体感刺激反应的潜伏期表明，躯体传入冲动可能在网状结构水平终止，并通过脊髓-网状结构-舌下神经通路与舌下神经核接触。先前的研究表明，视觉和前庭输入会接触舌下神经核的同一中尾部区域。因此，舌头的姿势安排可能受到前庭、视觉和体感系统的复杂控制。
