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Electrosensory stimulus-intensity thresholds in the weakly electric knifefish Eigenmannia: reduced sensitivity at harmonics of its own organ discharge

Kaunzinger, Ivo ; Kramer, Bernd
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Date of publication of this fulltext: 05 Aug 2009 13:36


Abstract

The South American knifefish Eigenmannia sp. can detect the electric organ discharges (EODs; 250–600 Hz) of conspecifics when they are superimposed over its own EOD. This study investigates the minimum frequency difference necessary for such signal perception, using the application of sine-wave stimuli. Electrosensory stimulusintensity thresholds were determined for trained fish using stimuli ...

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