首页   按字顺浏览 期刊浏览 卷期浏览 Cochlear‐Nucleus‐Evoked Responses in the Rat
Cochlear‐Nucleus‐Evoked Responses in the Rat

 

作者: David Crowley,  

 

期刊: The Journal of the Acoustical Society of America  (AIP Available online 1969)
卷期: Volume 46, issue 1A  

页码: 112-113

 

ISSN:0001-4966

 

年代: 1969

 

DOI:10.1121/1.1972567

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

Evoked responses to 118‐dB SPL clicks recorded from the rat's dorsal cochlear nucleus (DCN) have a complex waveform with a first biphasic positive‐negative component that represents auditory‐nerve axon discharge. The second component, which follows the first by 0.8 to 1.3 msec. is a smaller positive‐negative wave and may reflect second‐order fiber discharge within the DCN, but does not representN2. In the extreme lateral DCN, a third evoked response component is a large positive‐negative biphasic wave that may be related toN2. In the rest of the DCN, the third component is a slow monophasic baseline shift lasting 5–6 msec, upon which the second components may frequently be superimposed. As click intensity is varied between 83 and 108 dB SPL, rarefaction‐click DCN responses have shorter latencies and greater amplitude than do condensation‐click responses reflecting at the cochlear nucleus level the earlier excitation of auditory‐nerve dendrites by upward excursions of the basilar membrane. [Supported by NINDB grant and Middlebury College.]

 

点击下载:  PDF (279KB)



返 回