Campus Units

Zoology, Genetics, Development and Cell Biology, Entomology

Document Type

Article

Publication Version

Published Version

Publication Date

1991

Journal or Book Title

Journal of Experimental Biology

Volume

158

Issue

1

First Page

583

Last Page

589

Abstract

In teleosts, a startle response occurs when one of a pair of Mauthner cells (Mcells) originating in the fish hindbrain is excited by sensory afferents and fires a single action potential. This action potential propagates caudally along the M-axon, which crosses the midline and continues tailward within the spinal cord. In passage, the M-spike excites (via collaterals) primary motor neurons within the spinal cord which, in turn, activate nearby axial musculature. The most obvious behavioral result of this highly conserved (at least in teleosts) and stereotypic sequence is a fast body bend toward the side of the active M-axon such that the fish forms the shape of the letter C. This is stage 1 of the teleost 'C-start', also previously called the M-reflex (for reviews, see Nissanov and Eaton, 1989; Eaton and DiDomenico, 1986; Eaton and Nissanov, 1985; Eaton and Hackett, 1984; Eaton and Bombardieri, 1978; Diamond, 1971).

Comments

This article is from Journal of Experimental Biology, 1991, 158(1); 583-589. Posted with permission.

Copyright Owner

The Company of Biologists Limited

Language

en

File Format

application/pdf

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