Waveform discrimination, phase sensitivity and jamming avoidance in a wave-type electric fish

DOI to cite this document:: 10.5283/epub.2112

Kramer, Bernd

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Item type:	Article
Journal or Publication Title:	Journal of Experimental Biology
Volume:	202
Number of Issue or Book Chapter:	10
Page Range:	pp. 1387-1398
Date:	May 1999
Institutions:	Biology, Preclinical Medicine > Institut für Zoologie > Alumni or Retired > Verhaltensbiologie und Verhaltensphysiologie (Prof. Dr. Bernd Kramer)
Keywords:	electric organ discharge; Gymnotiformes, signal waveform discrimination; amplitude spectrum, phase spectrum; frequency difference; jamming avoidance response; beat analysis; sensory mechanism; Eigenmannia
Dewey Decimal Classification:	500 Science > 570 Life sciences 500 Science > 590 Zoological sciences
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Item ID:	2112

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Abstract

The electric organ discharge (EOD) of most species of the freshwater knifefishes (Gymnotiformes) of South America is of the wave, not the pulse, type. Wave EODs are usually of constant frequency and amplitude, and show a bewildering multitude of species-characteristic waveforms. The EOD of Eigenmannia is sexually dimorphic in waveform and in the intensity of its higher harmonics. In a go/no go ...

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