Fay R R, Popper A N
J Exp Biol. 1975 Apr;62(2):379-87. doi: 10.1242/jeb.62.2.379.
Microphonic potentials were recorded from the inner ears of a catfish (Ictalurus punctatus) and an African mouthbreeder (Tilapia macrocephala) in response to underwater sound stimulation and direct vibration of the head. The shape of the vibratory isopotential functions of frequency was similar in both species up to 600 HZ. Above 600 HZ, the sensitivity of Ictalurus continued to increase to 4000 HZ while the sensitivity of Tilapia declined. Deflation of the swim bladder did not affect the response to vibration in either species, the response of Tilapia to the underwater sound stimulus being minimal and unaffected by removal of the swim bladder. Ictalurus was pressure-sensitive to above 4000 HZ, ther being a significant dedline in the response with deflation of the swimbladder.
记录了鲶鱼（斑点叉尾鮰）和非洲口孵鱼（巨头罗非鱼）内耳的微音器电位，以响应水下声音刺激和头部的直接振动。在高达600赫兹的频率范围内，两个物种的振动等电位函数形状相似。高于600赫兹时，鲶鱼的敏感性持续增加至4000赫兹，而罗非鱼的敏感性下降。鱼鳔放气对两个物种的振动反应均无影响，罗非鱼对水下声音刺激的反应极小，且不受鱼鳔切除的影响。鲶鱼在高于4000赫兹时对压力敏感，鱼鳔放气时反应会显著下降。
