Electrolocation based on tail-bending movements in weakly electric fish
نویسندگان
چکیده
منابع مشابه
Electrolocation based on tail-bending movements in weakly electric fish.
Weakly electric fish generate an electric field with their electric organ to navigate in space, detect objects and communicate with conspecifics. Several studies have examined how electric fish identify objects with their electroreceptors and use electric images for electrolocation. It has been argued that sensor readings from electroreceptors along the rostrocaudal line allow fish to determine...
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In this paper, we provide a mathematical model for the electrolocation in weakly electric fishes. We first investigate the forward complex conductivity problem and derive the approximate boundary conditions on the skin of the fish. Then we provide a dipole approximation for small targets away from the fish. Based on this approximation, we obtain a non-iterative location search algorithm using m...
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Weakly electric fish use active electrolocation to identify objects. They generate electric field by the electric organ discharge and perceive the distortion of electric image with existence of certain object. There have been many researches to comprehend the electrolocation mechanism of electric fishes. It is known that the ratio between the maximal slope of electric image and its maximal ampl...
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We present a mathematical model for the problem of active electrolocation. This ability is shared by fishes that are able to recognize an object by means of emitting an electric field and recording it at the surface of their skin. For the forward problem, an electroquasistatic formulation is carried on, and multi-scale analysis of the problem is performed for the boundary conditions. Then, the ...
متن کاملActive electrolocation of objects in weakly electric fish
Weakly electric fish produce electric signals (electric organ discharges, EODs) with a specialised electric organ creating an electric field around their body. Objects within this field alter the EOD-induced current at epidermal electroreceptor organs, which are distributed over almost the entire body surface. The detection, localisation and analysis of objects performed by monitoring self-prod...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2011
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.052308