Evoked-potential audiogram of the Yangtze finless porpoise Neophocaena phocaenoides asiaeorientalis (L)

被引：35
|
作者：
Popov, VV
Supin, AY
Wang, D
Wang, KX
Xiao, JQ
Li, SH
机构：
[1] Russian Acad Sci, Inst Ecol & Evolut, Moscow 119071, Russia
[2] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
来源：
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2005年 / 117卷 / 05期
关键词：
D O I：
10.1121/1.1880712
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Evoked-potential audiograms were obtained in two (one male and one female) Yangtze finless porpoises, Neophocaena phocaenoides asiaseorientalis. Sinusoidal amplitude-modulated 20-ms tone bursts were used as probes with recording envelope-following evoked potentials. A frequency range of 8 to 152 kHz was investigated. The range of greatest sensitivity covered frequencies from 45 to 139 kHz, and the lowest thresholds of 47.2 and 48.5 dB re: 1 μ Pa were found at a frequency of 54 kHz in the two subjects, respectively. At lower frequencies, threshold increased with a rate of around 14 dB/octave, and threshold steeply increased at 152 kHz. © 2005 Acoustical Society of America.
引用
收藏
页码：2728 / 2731
页数：4
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