鐙骨筋の音響性反射収縮に関する実験的研究

概要

論文の詳細を見る
The acoustic reflex contraction of the stapedius muscle and its influence on the incudo-stapedial joint were studied by means of the electromyogram of the stapedius muscle and condenser method.The following results were obtained: 1) The latent period of the acoustic reflex contraction of the stapedius muscle was 3.44 msec.2) The acoustic reflex contraction of the stapedius muscle was not only influenced by the intensity but also by the frequency of the stimulating tone.The electromyogram of the stapedius muscle was obtained at about 50-16, 000 cps.3) On the stapedius muscle, adaptation phenomenon was observed on the electromyogram; this phenomenon was similar to that of the tensor muscle and the auricular muscle.4) The threshold of the acoustic reflex contraction was about 20_??_100 db on the stapedius muscle and always lower than that of the tensor muscle.5) The displacement of the stapes and the deformation of the incudo-stapedial joint during the reflex contraction of the stapedius muscle were observed throuth the microscope
社団法人日本耳鼻咽喉科学会の論文