The Jamming Avoidance Response in an Electric Fish: Algorithms in Sensory Information Processing and their Neuronal Realization
Even complex electric stimulus regimes, such as those which result by interference of signals from several fish, can readily be simulated with the aid of computers and other electronic equipment.
Electroreceptors are spread out over the animal’s body surface and can thus be stimulated locally and individually.
Certain behavioral responses, such as the Jamming Avoidance Responses (JARs) in gymnotiform fish, remain intact even in neurophysiological preparations. This fact considerably facilitates the identification of the role of specific classes of neurons in the control of this behavior.
Most species of electric fish are small (several centimeters to decimeters) and their complete brains can be spread out on a small number of microscope slides. However, regardless of their small size, these brains show richly laminated and cortex-like structures which seem to execute algorithms of sensory information processing very similar to those in higher vertebrates.
KeywordsElectric Organ Discharge Electric Fish Differential Phase Instantaneous Amplitude Torus Semicircularis
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- Bell, C.C., 1979, Central nervous system physiology of electroreception, a review. J. Physiol. (Paris), 75:361–379.Google Scholar
- Carr, C.C., Maler, L., Heiligenberg, W., and Sas, E., 1981a, Laminar organization of the afferent and efferent systems of the torus semicircularis of gymnotiform fish: Morphological substrates for parallel processing in the electrosensory system. J. Comp. Neurol., 203:649–670.PubMedCrossRefGoogle Scholar
- Carr, C.C., Maler, L., and Sas, E., 1981b, Peripheral organization and central projections of the electrosensory nerves in gymnotiform fish. J. Comp. Neurol., (submitted).Google Scholar
- Heiligenberg, W., and Dye, J., 1981, Labelling of functionally identified neurons in electric fish by intracellular injection of HRP. Soc. Neurosci. Abstr. 7:844.Google Scholar
- Scheich, H., and Bullock, T.H., 1974, The role of electroreceptors in the animal’s life II: The detection of electric fields from electric organs, in “Handbook of Sensory Physiology” Vol. III/3, A. Fessard, ed., Springer, Berlin, Heidelberg, New York.Google Scholar
- Szabo, T., and Fessard, A., 1974, Physiology of electroreceptors, in “Handbook of Sensory Physiology” Vol.III/3, A. Fessard, ed., Springer, Berlin, Heidelberg, New York.Google Scholar
- Tinbergen, N., 1951, The study of instinct, Oxford University Press, London.Google Scholar
- Watanabe, A., and Takeda, K., 1963, The change of discharge frequency by A.C. stimulus in a weakly electric fish. J. Exp. Biol., 40:57–66.Google Scholar