From morphology to neural information: The electric sense of the skate

被引:17
作者
Camperi, Marcelo [1 ]
Tricas, Timothy C.
Brown, Brandon R.
机构
[1] Univ Calif San Francisco, Dept Phys, San Francisco, CA 94143 USA
[2] Univ Hawaii Manoa, Dept Zool, Honolulu, HI 96822 USA
[3] Univ Hawaii Manoa, Hawaii Inst Marine Biol, Honolulu, HI 96822 USA
关键词
D O I
10.1371/journal.pcbi.0030113
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Morphology typically enhances the fidelity of sensory systems. Sharks, skates, and rays have a well-developed electrosense that presents strikingly unique morphologies. Here, we model the dynamics of the peripheral electrosensory system of the skate, a dorsally flattened batoid, moving near an electric dipole source (e. g., a prey organism). We compute the coincident electric signals that develop across an array of the skate's electrosensors, using electrodynamics married to precise morphological measurements of sensor location, infrastructure, and vector projection. Our results demonstrate that skate morphology enhances electrosensory information. Not only could the skate locate prey using a simple population vector algorithm, but its morphology also specifically leads to quick shifts in firing rates that are well-suited to the demonstrated bandwidth of the electrosensory system. Finally, we propose electrophysiology trials to test the modeling scheme.
引用
收藏
页码:1083 / 1096
页数:14
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