Narins P M, Lewis E R
J Acoust Soc Am. 1984 Nov;76(5):1384-7. doi: 10.1121/1.391455.
The neotropical frog Leptodactylus albilabris exhibits the greatest sensitivity to substrate-borne vibrations (seismic stimuli) reported to date for any terrestrial animal. Nerve fibers from the source of this extraordinary sensitivity in the ear show clear stimulus-evoked modulations of their resting discharge rates in response to sinusoidal seismic stimuli with peak accelerations less than 0.001 cm/s2 (10(-6) g). Evidence indicates that its source is the saccule, an organ of hearing in fish and of balance in man. We report that single vibration-sensitive fibers in the white-lipped frog saturate at (whole animal) displacements of 10 A peak to peak [Fig. 1(b)]. Assuming a conservative 20-dB dynamic range for these fibers, the in vivo frog saccule and the mammalian cochlea exhibit roughly equal sensitivities to displacement.
新热带区蛙类白唇蛙对基质传播振动（地震刺激）的敏感度是迄今为止所报道的所有陆生动物中最高的。耳部这种非凡敏感度来源的神经纤维，在峰值加速度小于0.001厘米/秒²（10⁻⁶g）的正弦地震刺激作用下，其静息放电率呈现出明显的刺激诱发调制。有证据表明其来源是球囊，这是鱼类的听觉器官以及人类的平衡器官。我们报告称，白唇蛙中单个振动敏感纤维在（整个动物）峰峰值位移为10埃时达到饱和[图1(b)]。假设这些纤维的动态范围保守为20分贝，那么活体青蛙的球囊和哺乳动物的耳蜗对位移的敏感度大致相当。
