Some Effects of Narcosis on the Nerve Impulse in the Squid, Loligo opalescens

Publisher Website
Google Scholar
Abstract
Narcotization of the fin-nerve of the squid, L. opalescens, in general, takes place in the slow fibers first, in the fast fibers last; but some of the fast fibers show narcosis at the same time as the slow ones. The amplitude of the potential in narcotized fin-nerves may vary independently of the velocity of propagation. Retardation does not precede reduction of potential. Since, in the squid, myelination of all the fibers is extremely light, that factor cannot be assumed to account for differences in the susceptibility of fast (large) and slow (small) fibers. The variation must then be due to differences in the nature of the conducting systems which, in turn, may be referred either to some function of the surface/volume ratio or to specific differences in the constitution of the 2 types of fiber.

This publication has 5 references indexed in Scilit: