瞬目描写による顔面神経麻痺検査法

DIAGNOSIS OF FACIAL PALSY BY MEANS OF RECORDING BLINK-REFLEX

　Ⅰ．緒言

　潜在性のものを含めて，顔面神経麻痺があるかないか？これを他覚的に記録証明することは，耳神経学的診断上きわめて重要な問題である。

　さて，顔面神経麻痺に関し従来一般に行なわれている検査法には，視診法と筋電図による方法がある。前者は方法が簡便であるが，記録性に欠け定性的意義を有するに過ぎない。一方，筋電図法は記録性および定量的意義を有し，とくに麻痺の予後を知る上に欠くことのできない方法であるが，潜在性麻痺の正確な摘発という点に関して，必ずしも絶対的意義を有するとはいえない。

In oder to find the degree of paralysis of the facial nerve or of latent paralysis the-rein a method is devised by the authors with which it may be used as a routine test. By means of penoscillography the blink reflex of both eyes are recorded sepa-rately for the speed of the responses manife-sted by the wave-length; these two records are compared to each other. The blink refle-xes may be elicited by using a light glabella-tap by means of a percussion hammer or by means of light-flash employing 200 w electric bulb. Diphasic spiking is noted the oscillo-graphic tracings in blink reflex; in normal persons the wave-length in the tracings is almost identical in both eyes. Discrepancies in this response reaction of both eyes more than 5% by glabclla tap and 8% by light-flash are regarded as to be pathological.