Multimodal Torus in the Weakly Electric Fish Eigenmannia (Heftet)

Serie: Advances in Anatomy, Embryology and Cell Biology 82

Forfatter:

og

Forfatter: og
Innbinding: Heftet
Utgivelsesår: 1983
Antall sider: 72
Forlag: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
Språk: Engelsk
Serie:
Serienummer: 82
ISBN/EAN: 9783540125174
Omtale Multimodal Torus in the Weakly Electric Fish Eigenmannia
Ever since the behavioral work of Lissrnann (1958), who showed that the weak electric discharges of some families of fish (hitherto considered useless for prey capture or for scaring away enemies) are part of a strange sensory system, these fish have attracted attention from biologists. The subsequent discovery of the electroreceptors in the skin of gymnotids and mormyrids (Bullock et al. 1961; Fessard and Szabo 1961) and the evidence that the ampullae of Lorenzini of nonelectric sharks and rays are also electro- receptors (Digkgraaf and Kalmijn 1962) was a start for a lively branch of physiological, anatomical, and behavioral research. Many fmdings of general importance for these fields have made the case to which extremes the performance of the central and peri- pheral nervous systems can be driven. Among those fmdings is the temporal accuracy of the pacemaker of some high-frequency fish which controls the electric organ, pro- bably the most accurate biological clock (coefficient of variation < 0. 0 1 %, Bullock 1982). The functional analysis of the pacemaker cells and their axons has established most of our knowledge on electrotonic synapses, the alternative to chemical synapses (Bennett et al. 1967), and of the implications of axonal delay lines for achieving extreme synchrony of parallel inputs to postsynaptic elements (Bennett 1972; Bruns 1971).

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