Mensinger Allen F
Biology Department, University of Minnesota Duluth, Duluth, MN, 55812, USA.
Marine Biological Laboratory, Woods Hole, MA, 02543, USA.
Adv Exp Med Biol. 2016;877:271-89. doi: 10.1007/978-3-319-21059-9_13.
The utricular otolith and the mechanosensory lateral line of the toadfish, Opsanus tau, were investigated for sensitivity to multimodal sensory input by recording neural activity from free swimming fish. The utricle was sensitive to horizontal body movement, and displayed broad sensitivity to low frequency (80-200 Hz) sound. The lateral line was sensitive to water currents, swimming, prey movements, and sound with maximal sensitivity at 100 Hz. Both systems showed directional sensitivity to pure tones and toadfish vocalizations, indicating potential for sound localization. Thus, toadfish possess two hair cell based sensory systems that integrate information from disparate sources. However, swimming movements or predation strikes can saturate each system and it is unclear the effect that self-generated movement has on sensitivity. It is hypothesized that the toadfish's strategy of short distance swim movements allows it to sample the acoustical environment while static. Further study is needed to determine the integration of the two systems and if they are able to segregate and/or integrate multimodal sensory input.
通过记录自由游动的蟾鱼（Opsanus tau）的神经活动，研究了其椭圆囊耳石和机械感觉侧线对多模态感觉输入的敏感性。椭圆囊对身体水平运动敏感，并且对低频（80 - 200赫兹）声音表现出广泛的敏感性。侧线对水流、游动、猎物运动以及声音敏感，在100赫兹时具有最大敏感性。两个系统对纯音和蟾鱼发声都表现出方向敏感性，表明具有声音定位的潜力。因此，蟾鱼拥有两个基于毛细胞的感觉系统，它们整合来自不同来源的信息。然而，游泳运动或捕食攻击可能会使每个系统饱和，并且尚不清楚自身产生的运动对敏感性有何影响。据推测，蟾鱼短距离游泳运动的策略使其能够在静止时对声学环境进行采样。需要进一步研究以确定这两个系统的整合情况，以及它们是否能够分离和/或整合多模态感觉输入。
