聴入力の遠心性制御

Centrifugal control systems of auditory inputs from the brainstem

　聴覚伝導路から受容器のレベルまで下行して受容器活動を修飾する二つの系，過大な音刺激により低音入力をマクロに制限する耳小骨筋の音響反射および比較的高音部に対応する限局した受容器の活動をミクロに抑制するオリーブ蝸牛束の機能を概観する。

Abstract

The outline of the structural and functional features of two centrifugal systems from the superior olivary complex controlling the auditory signals in the middle ears or the cochlea were summarized and their physiological significances were discussed.

One of the two systems, the acoustic middle ear muscle reflex arc, consists of 3 or 4 neuronchains.