Dong H H, Liu L, Zhang H
Department of Physiology, Shandong Medical University, Jinan.
Sheng Li Xue Bao. 1993 Apr;45(2):136-41.
The effects of electrical stimulation to the nucleus termination nervi trigemini (NTV) on the activities of genioglossus were studied in 35 rabbits anesthetized with urethane. Electrical stimulation of NTV could cause facilitatory response of genioglossal muscle markedly. Monosodium glutamate microinjected into NTV also produced significant increase of genioglossal activities. The latency of genioglossal response to electrical stimulation of dorsal or ventral part of NTV were respectively 5.9 +/- 0.7 ms and 3.0 +/- 0.4 ms. When the nucleus hypoglossus was stimulated, the latency was 2.2 +/- 0.2 ms. These results suggested that the excitation of NTV could enhance the genioglossal activities so that the resistance of upper airway might be decreased.
在35只氨基甲酸乙酯麻醉的家兔中，研究了电刺激三叉神经终核（NTV）对颏舌肌活动的影响。电刺激NTV可明显引起颏舌肌的易化反应。向NTV内微量注射谷氨酸钠也可使颏舌肌活动显著增强。电刺激NTV背侧或腹侧部分时，颏舌肌反应的潜伏期分别为5.9±0.7毫秒和3.0±0.4毫秒。刺激舌下神经核时，潜伏期为2.2±0.2毫秒。这些结果提示，NTV的兴奋可增强颏舌肌活动，从而可能降低上气道阻力。
