Gentil M, Devanne H, Maton B, Brice A
CHU Pitié Salpêtrière, Laboratoire Physiologie de la Motricité, Paris, France.
Electromyogr Clin Neurophysiol. 1992 Dec;32(12):591-5.
Jaw jerk was studied in 10 subjects with Friedreich ataxia, and 10 normal subjects for comparison. Electromyographic recording from the right masseter muscle showed a reflex response in all cases, in contrast to the absence of tendon reflexes in the four limbs for the ataxics. The mean latency of the jaw jerk was normal. These observations indicate that the jaw reflex arc is preserved, and that no damage to the trigeminal neuromuscular pathway exists for all the patients observed.
对10例弗里德赖希共济失调患者和10名正常受试者进行了下颌反射研究以作比较。右侧咬肌的肌电图记录显示，所有病例均有反射反应，而共济失调患者四肢的腱反射缺失。下颌反射的平均潜伏期正常。这些观察结果表明，下颌反射弧是完整的，并且在所有观察的患者中三叉神经肌肉通路均未受损。
