Acoustic intensity discrimination by the cichlid fish Astronotus ocellatus (Cuvier).
Acoustic intensity discrimination by the cichlid fish Astronotus ocellatus (Cuvier).
复制标题
丽鱼科鱼 Astronotus ocellatus (Cuvier) 的声学强度辨别。
DOI：
10.1007/bf00212699
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Popper,AN
中科院分区：
文献类型：
--
作者：
Yan,HY;Popper,AN
采用自动正奖励法研究了慈鱼OSCAR(Astronotus Ocellatus)的声强辨别能力。测量了7-S连续纯音信号的强度辨别阈值(ΔI，单位为分贝)和频率(2 0 0、5 0 0、80 0赫兹)与阈值以上声强(即感觉电平(SL)(+10、+2 0、+30))的关系。在500赫兹下，+10分贝、+20分贝和+30分贝的ΔI分别为8.9分贝、5.5分贝和3.3分贝。ΔI(+20dBSL)在200 Hz、500 hz和800 hz时分别为4.5dB5.5和9.3dB.尽管OSCAR的听觉灵敏度较低(频率范围窄，阈值高)，但其强度辨别能力与以往研究的鱼类物种的一般趋势一致，但阈值较高。
The acoustic intensity discrimination ability of the oscar (Astronotus ocellatus), a cichlid fish, was investigated using an automated positive reward method. Intensity discrimination thresholds (ΔI, in dB) for 7-s continuous pure tone signals were measured both as functions of sound intensity above thresholds, i.e., sensation levels, (SL)(+10 dB, +20 dB and +30 dB) and frequency (200 Hz, 500 Hz, and 800 Hz). ΔI at 500 Hz for +10 dB, +20 dB, and +30 dB SLs are 8.9, 5.5, and 3.3 dB, respectively. ΔI (at+20 dB SL) for 200 Hz, 500 Hz, and 800 Hz are 4.5, 5.5, and 9.3 dB, respectively. Despite having poor auditory sensitivity (narrow frequency range and high thresholds), the intensity discrimination ability of the oscar follows the general trends of previously studied fish species, however, with higher thresholds.