Effect of Electrical Stimulation of the Superior Laryngeal Nerve on Respiratory-Modulated Facial Nerve Activity in Cats

電刺激上喉神經對獵顏面神經呼吸活動的影響

馮文龍(M.-L. Fung) ； 廖娟妙(J.-M. Liaw) ； 黃基礎(J.-C. Hwang)

《The Chinese Journal of Physiology》 32卷2期 (1989/12) Pp. 81-91

摘要

本研究的目的是要探討顔面神經呼吸活動對上喉神經興奮的反應。貓十五隻，經戊巴比妥鈉麻醉，兩側迷走神經被切斷，於麻痺後以人工呼吸機維生。動物維持在高氧而二氧化碳在正常及增加的情況下。通電刺激上喉神經，刺激的頻率是20Hz，頻寬是0.5mSec，強度是30，50，100及150μA。電刺激上喉神經會促使顔面神經吸氣活動增強，且與刺激強度成比例增加，膈神經活動降低或不變，呼吸週期延長，這些結果表示顔面神經對調節鼻腔阻力可能扮演重要角色。

並列摘要

Fung M.-L., J.-M. Liaw and J.-C. Hwang: Effect of electrical stimulation of the superior layngeal nerve on respiratoy-modulated facial nerve activity. Chinese J. Physiol. 32(2):81-90, 1989. The purpose of the present study was to evaluate the response of respirtory-modulated facial nerve to electrical activation on the superior laryngeal nerve (SLN). The experiments were performed on fifteen cats which were anesthetized with pentobarbital, vagotomized, paralyzed and artificially ventilated. The animals were maintained at different levels of carbon dioxide in hyperoxia. Parameters of electrical stimulation were 20Hz of frequency, 0.5mSec of duration and a variety of intensity (30, 50, 100 and 15μA). Facial activity increased significantly (P ＜0.05) in response to SLN activation. This augmentation of facial discharge was proportional to the intensity of electrical activation on the SLN. Phrenic response to SLN stimulation was either decreased or not changed. Total duration of respiratory cycle after activation of the SLN was increased. The results showed that facial activity may play a role in the regulation of nasal resistance.

並列關鍵字

superior laryngeal nerve ； electrical stimulation ； facial nerve activity ； cat