HEARING IN PASSERINE AND PSITTACINE BIRDS - A COMPARATIVE-STUDY OF ABSOLUTE AND MASKED AUDITORY-THRESHOLDS
HEARING IN PASSERINE AND PSITTACINE BIRDS - A COMPARATIVE-STUDY OF ABSOLUTE AND MASKED AUDITORY-THRESHOLDS
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DOI：
10.1037/0735-7036.101.1.7
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发表时间：
1987-03-01
影响因子：
1.4
通讯作者：
DOOLING, RJ
中科院分区：
文献类型：
--
作者：
OKANOYA, K;DOOLING, RJ
操作性条件反射和心理物理跟踪程序被用来测量听觉阈值纯音在安静和噪音的7种小鸟-虎皮鹦鹉，金丝雀，凤头鹦鹉，欧洲椋鸟，歌雀，沼泽麻雀，斑胸草雀。7只鸟的听觉曲线大致相似，最大灵敏度在2至5 kHz之间，在此狭窄区域之外的灵敏度较差。根据噪声中的纯音阈值计算临界比（掩蔽阈值时的信噪比）。除虎皮鹦鹉外，其它鸟类的临界比率函数均以3dB/倍频程的速率增加。这种模式是在大多数脊椎动物中观察到的典型。另一方面，虎皮鹦鹉的临界比率从0.5 kHz到2.8 kHz逐渐降低，并在2.8 kHz以上急剧增加。研究表明，虎皮鹦鹉的临界比率函数不仅不同于其他脊椎动物，也不同于其他鸟类。（PsycINFO数据库记录（c）2016阿帕，保留所有权利）
Operant conditioning and a psychophysical tracking procedure were used to measure auditory thresholds for pure tones in quiet and in noise for seven species of small birds—the budgerigar, canary, cockatiel, European starling, song sparrow, swamp sparrow, and the zebra finch. Audibility curves are roughly similar among the seven birds, with the maximum sensitivity between 2 and 5 kHz and poorer sensivitity outside this narrow region. Critical ratios (signal-to-noise ratio at masked threshold) were calculated from pure-tone thresholds in noise. Except for the budgerigar, the critical ratio functions of all birds increase at the rate of 3 dB/octave. This pattern is typical of that observed in most vertebrates. Critical ratios in the budgerigar, on the other hand, decrease gradually from 0.5 kHz to 2.8 kHz and increase dramatically above 2.8 kHz. The present research demonstrates that the critical ratio function for the budgerigar is not only different from other vertebrates but also different from other birds.(PsycINFO Database Record (c) 2016 APA, all rights reserved)