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迷路切除及前庭神经切断是解除眩晕的有效方法,但是有些病人仍复发。既往的形态学研究表明,残留的感觉上皮、神经再生及神经瘤形成是眩晕复发的原因,然而,感觉神经再生过程中静止或运动的姿势变化研究甚少。为阐明该问题,作者取9只蛙,切断右侧前庭神经上支,测量蛙头的倾斜角度及恢复情况。姿势恢复后处死动物,将前庭神经连同前、水平半规管、椭圆囊一起取出。刺激半规管,测定壶腹神经的动作电位,壶腹嵴、椭圆囊作扫描电镜观察,断端近侧前庭神经干作光镜观察。结果发现术后蛙保持强迫体位,头和躯体倾向右侧,健侧的上下肢伸直。术后即刻头位倾斜
Lost and vestibular nerve resection is an effective method to relieve dizziness, but some patients still relapse. Previous morphological studies have shown that residual sensory epithelium, neuroregeneration and neuroma formation are responsible for the recurrence of vertigo. However, there are few studies on postural or motor posture changes during sensory nerve regeneration. To clarify the problem, the author took nine frogs, cut off the upper vestibular nerve on the branch, measuring the angle of the frog head and recovery. The animals were sacrificed after the resumption of posture, and the vestibular nerve was removed together with the anterior semicircular canal and the oval sac. Stimulation of the semicircular canal, determination of the action potential of the ampulla nerve, ampulla ridges, oval capsule for scanning electron microscopy, stump near the vestibular nerve for light microscopy. The results showed that postoperative frog to maintain forced position, head and body tend to the right, upper and lower limbs straightening. Immediate postoperative head tilt