Obeso J A, Artieda J, Marsden C D
Neurology. 1985 Sep;35(9):1378-80. doi: 10.1212/wnl.35.9.1378.
We studied a patient with blepharospasm provoked by stretching the orbicularis oculi muscles. With the eyes closed, EMG of the orbicularis oculi at rest revealed spontaneous rhythmic muscle activity that was not visible. When she tried to open her eyes, repetitive jerking blepharoclonus and tonic blepharospasm rendered her functionally blind. Passive stretching of the orbicularis oculi evoked a burst of EMG activity with two components. Touch or pinprick did not elicit such reflex activity. Anesthesia of the supraorbital nerves abolished muscle responses to stretch and improved the blepharospasm.
我们研究了一名因眼轮匝肌伸展诱发睑痉挛的患者。闭眼时，静息状态下眼轮匝肌的肌电图显示有不可见的自发性节律性肌肉活动。当她试图睁开眼睛时，重复性抽搐性睑阵挛和强直性睑痉挛导致她功能性失明。被动伸展眼轮匝肌可诱发具有两个成分的肌电图活动爆发。触摸或针刺不会引发这种反射活动。眶上神经麻醉消除了肌肉对伸展的反应并改善了睑痉挛。
