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(1.周围性病变) 用眼颤电图(ENG)来检查各种眼球活动障碍,对神经—耳科诊断学方面渐成为一种重要的辅诊手段;1968年Hood氏研究神经系统各水平病损时的自发性眼颤,采用去除固定视物,即在闭眼时或在暗室中睁眼状态下描记ENG,发现有三种不同类型的反应:(1)周围性病变:用闭眼及在暗室描记法可使已出现的眼颤增强,无眼颤者出现眼颤;(2)前庭神经核病变:闭眼时眼颤消失,虽在暗室描记中可出现一致性减弱波型;(3)高位脑干病变:闭眼及暗室中眼颤均消失。
(1. Peripheral lesions) with eye electromyography (ENG) to check a variety of eye movement disorders, neuro-otology diagnostic aspects has become an important means of diagnosis; 1968 Hood’s various levels of the nervous system Spontaneous nystagmus at the time of injury, using removal of fixed visualizations, that is, ENG recording under closed eyes or open eyes in darkroom, revealed three different types of reactions: (1) Peripheral lesions: In the dark room tracings can make the eye has increased nystagmus, nystagmus who did not appear nystagmus; (2) vestibular nucleus lesions: eyes closed when the disappearance of nystagmus, although in the dark tracing can occur consistent weakening waveform; ( 3) high brainstem lesions: closed eyes and darkroom in the eye flutter were disappeared.