A neural model of electrosensory system making electrolocation of weakly electric fish
A neural model of electrosensory system making electrolocation of weakly electric fish
复制标题
弱电鱼电定位的电传感系统神经模型
DOI：
10.1016/s0925-2312(01)00495-7
复制
发表时间：
2001
期刊：
影响因子：
6
通讯作者：
T. Kambara
中科院分区：
文献类型：
--
作者：
Y. Kashimori;Masanori Minagawa;S. Inoue;O. Hoshino;T. Kambara
我们解决了鱼如何识别物体在给定位置的位置的问题，独立于物体的电性质，尽管电场的畸变模式取决于电性质而变化。为了了解鱼的电器官放电（EOD）产生的电场是如何被电阻性和容性物体在空间和时间上扭曲的，我们利用合理的鱼体模型计算了电场。分布在鱼体表的P电感受器和T电感受器分别响应EOD的振幅和相位调制，并将其输出信号分别传播到电感觉侧线叶（ELL）和半圆环（TS）。作为明确电定位神经机制的第一步，我们建立了由电感受器、传入神经、ELL和TS组成的电感觉系统神经网络模型，并分别研究了ELL和TS中振幅和相位调制的编码方式。
We address the question of how the fish recognizes the location of objects at a given position, independently of the electric properties of objects, although the distortion pattern of electric field is varied depending on the electric property. To know how the electric field generated by fish's electric organ discharge (EOD) is spatially and temporally distorted by resistive and capacitive objects, we calculated the electric field using a reasonable model of fish body. P and T electroreceptors distributed on the fish body surface respond to the amplitude and phase modulations of EOD, respectively, and propagate their output signals to electrosensory lateral-line lobe (ELL) and torus semicircularis (TS), respectively. As the first step to clarify the neural mechanism of electrolocation, we made a neural network model of electrosensory system consisting of electroreceptors, afferent nerves, ELL, and TS, and investigated how the amplitude and phase modulations are encoded in ELL and TS, respectively.