• Publications
  • Influence
Electric fish measure distance in the dark
Distance determination in animals can be achieved by visual or non-visual cues. Weakly electric fish use active electrolocation for orientation in the dark. By perceiving self-produced electricExpand
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Discrimination of objects through electrolocation in the weakly electric fish, Gnathonemus petersii
  • G. Emde
  • Biology
  • Journal of Comparative Physiology A
  • 1 August 1990
SummaryThree weakly electric fish (Gnathonemus petersii) were force-choice trained in a two-alternative procedure to discriminate between objects differing in their electrical characteristics. TheExpand
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Active 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 theExpand
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Perception of electric properties of objects in electrolocating weakly electric fish: two-dimensional similarity scaling reveals a City-Block metric
During electrolocation weakly electric fish monitor their self-emitted electric signals in order to detect and evaluate nearby objects. Individuals of the mormyrid species Gnathonemus petersii wereExpand
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Acute administration of THC impairs spatial but not associative memory function in zebrafish
RationaleThe present study examined the effect of acute administration of endocannabinoid receptor CB1 ligand ∆-9-tetrahydrocannabinol (THC) on intracellular signalling in the brain and retrievalExpand
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Electrolocation of capacitive objects in four species of pulse-type weakly electric fish. II: Electric signalling behaviour
In four species of mormyrid weakly electric fish (Pollimyrus isidori, Gnathonemus petersii, Mormyrus rume, and M. caschive) the electric signalling and motor behaviour during the solution of aExpand
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Electrolocation of capacitive objects in four species of pulse-type weakly electric fish. I : Discrimination performance
The great variety of species-typical electric signals (electric organ discharges, EOD) emitted by weakly electric mormyrid fish might be the result of evolutionary pressures stemming from the twoExpand
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Non-visual environmental imaging and object detection through active electrolocation in weakly electric fish
  • G. Emde
  • Biology
  • Journal of Comparative Physiology A
  • 28 January 2006
Weakly electric fish orient at night by employing active electrolocation. South American and African species emit electric signals and perceive the consequences of these emissions with epidermalExpand
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Classification of insects by echolocating greater horseshoe bats
SummaryEcholocating greater horseshoe bats (Rhinolophus ferrumequinum) detect insects by concentrating on the characteristic amplitude- and frequency modulation pattern fluttering insects impose onExpand
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The Schnauzenorgan-response of Gnathonemus petersii
BackgroundElectric fish navigate and explore their dark and turbid environment with a specialised electric sense. This active electrolocation involves the generation and perception of an electricExpand
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