通过带陷噪声掩蔽的听觉脑干反应揭示的海豚听觉频率调谐

Frequency tuning of the dolphin's hearing as revealed by auditory brain-stem response with notch-noise masking.

作者信息

Popov V V, Supin A Y, Klishin V O

机构信息

Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia.

出版信息

J Acoust Soc Am. 1997 Dec;102(6):3795-801. doi: 10.1121/1.420142.

DOI:10.1121/1.420142

PMID:9407671

Abstract

Notch-noise masking was used to measure frequency tuning in a dolphin (Tursiops truncatus) in a simultaneous-masking paradigm in conjunction with auditory brain-stem evoked potential recording. Measurements were made at probe frequencies of 64, 76, 90, and 108 kHz. The data were analyzed by fitting the rounded-exponent model of the auditory filters to the experimental data. The fitting parameter values corresponded to the filter tuning as follows: QER (center frequency divided by equivalent rectangular bandwidths) of 35 to 36.5 and Q10 dB of 18 to 19 at all tested frequencies.

摘要

在同时掩蔽范式中，结合听觉脑干诱发电位记录，使用带隙噪声掩蔽来测量海豚（宽吻海豚）的频率调谐。在64、76、90和108千赫的探测频率下进行测量。通过将听觉滤波器的圆形指数模型拟合到实验数据来分析数据。拟合参数值与滤波器调谐对应如下：在所有测试频率下，等效矩形带宽的品质因数（中心频率除以等效矩形带宽）为35至36.5，10分贝带宽的品质因数为18至19。