电刺激可诱发胸锁乳突肌出现短潜伏期肌电图反应，而选择性前庭神经切断术可消除这些反应。
Galvanic stimulation evokes short-latency EMG responses in sternocleidomastoid which are abolished by selective vestibular nerve section.
作者信息
Watson S R, Fagan P, Colebatch J G
机构信息
Institute of Neurological Sciences, The Prince of Wales Hospital, Randwick, Sydney, Australia.
出版信息
Electroencephalogr Clin Neurophysiol. 1998 Dec;109(6):471-4. doi: 10.1016/s0924-980x(98)00033-2.
OBJECTIVE
To describe vestibulocollic responses in sternocleidomastoid (SCM) evoked by transmastoid galvanic (DC) stimulation.
METHODS
We studied the averaged responses in the unrectified EMG of SCM to transmastoid galvanic stimulation (5 mA/2 ms) and also to 100 dB clicks. Two patients with Meniere's disease were studied both before and after unilateral selective vestibular nerve section.
RESULTS
Transmastoid galvanic stimulation produced a positive-negative biphasic EMG response at short latency in the SCM ipsilateral to the side of cathode placement, which resembled that which followed vestibular activation by loud clicks (p13/n23). Selective unilateral vestibular nerve section abolished this galvanic-evoked response.
CONCLUSIONS
Galvanic-evoked vestibulocollic responses can be recorded in SCM. This is a new method of studying vestibular reflex function which may have application in the clinical assessment of vestibular disorders.
目的
描述经乳突直流电（DC）刺激诱发的胸锁乳突肌（SCM）的前庭颈反射反应。
方法
我们研究了SCM的未整流肌电图对经乳突直流电刺激（5 mA/2 ms）以及对100 dB短声的平均反应。对两名梅尼埃病患者在单侧选择性前庭神经切断术前和术后均进行了研究。
结果
经乳突直流电刺激在阴极放置侧同侧的SCM中产生了潜伏期短的正负双相肌电图反应，类似于大声短声引起的前庭激活后的反应（p13/n23）。选择性单侧前庭神经切断术消除了这种直流电诱发的反应。
结论
可以在SCM中记录到直流电诱发的前庭颈反射反应。这是一种研究前庭反射功能的新方法，可能在眩晕疾病的临床评估中具有应用价值。
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