切断内侧传出束（交叉和不交叉的）对耳蜗频率选择性的影响。

Effects of section of the medial efferent tracts (crossed and uncrossed) on cochlear frequency selectivity.

作者信息

Bonfils P, Remond M C, Pujol R

出版信息

Hear Res. 1986;24(3):285-7. doi: 10.1016/0378-5955(86)90027-4.

Abstract

The cochlear innervation of guinea pigs was sectioned midway between the midline and the external side of the cochlear nucleus, in a rostrocaudal direction at the level of the floor of the fourth ventricle, to study the effects of medial efferent pathways on cochlear frequency selectivity estimated with tuning curves of single auditory nerve fibers. Single-unit tuning curves were affected by this type of efferent sectioning. Thus, the ipsi-lateral efferent system seems to be involved, through a tonic action, in the mechanisms responsible for high frequency cochlea selectivity.

摘要

为了研究内侧传出通路对通过单根听神经纤维调谐曲线估计的耳蜗频率选择性的影响，在豚鼠第四脑室底部水平，沿前后方向，在耳蜗核中线与外侧之间的中点切断耳蜗神经支配。这种传出神经切断影响了单单位调谐曲线。因此，同侧传出系统似乎通过一种紧张性作用，参与了负责高频耳蜗选择性的机制。