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猫听觉脑干反应的频率特异性

Frequency specificity of the auditory brainstem responses in the cat.

作者信息

Mair I W, Laukli E

出版信息

Acta Otolaryngol. 1985 Mar-Apr;99(3-4):377-83. doi: 10.3109/00016488509108926.

DOI:10.3109/00016488509108926
PMID:4013727
Abstract

The auditory brainstem responses evoked by click, noise-burst and tone-bursts have been recorded in the cat, and octave-wide derived bands obtained at 20 and 50 dB RL intensity levels. At near-threshold intensity both the 2 and 4 kHz tone-bursts are frequency specific, while the click and noise-burst ABR contain no contributions below 2 kHz. The principal contribution to the 1 kHz ABR comes from the 2-4 kHz band, while at 0.5 kHz almost the entire response is generated basally. Higher stimulus intensity produces a spread of activity into other bands. Low frequency cochlear function cannot be assessed by this technique.

摘要

在猫身上记录了由短声、短纯音爆和短音诱发的听觉脑干反应,并在20和50 dB RL强度水平下获得了倍频程衍生带。在接近阈值强度时,2 kHz和4 kHz的短音具有频率特异性,而短声和短纯音爆听觉脑干反应在2 kHz以下没有贡献。对1 kHz听觉脑干反应的主要贡献来自2-4 kHz频段,而在0.5 kHz时,几乎整个反应都在基底产生。更高的刺激强度会使活动扩散到其他频段。该技术无法评估低频耳蜗功能。

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