Reflex investigations on the visceral ganglion of the fresh-water mussel (Anodonta cygnea L.)

Salánki, János and Lábos, Elemér (1964) Reflex investigations on the visceral ganglion of the fresh-water mussel (Anodonta cygnea L.). A Magyar Tudományos Akadémia Tihanyi Biológiai Kutatóintézetének évkönyve, 31. pp. 123-132. ISSN 0365-3005

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Abstract

The reflex connections of the visceral ganglion in Anodonta cygnea L. were examined by the stimulation of the pertaining nerves with single square impulses and the leading off of the action potential from an other nerve. It has been established that at the excitation of the cerebrovisceral connectivum (CVC) of the one side, from the CVC of the other side and also from the nerves running to the adductor as well as from the n. pallialis posterior maior innerving the posterior part of the mantle an action potential consisting of several (2 to 6) components can be lead off. At the stimulation of the latter nerves an action potential consisting of several components can be gained also from the CVC. The results obtained indicate that 1. the visceral ganghon disposes of a very manifold reflex connection, 2. the nerves running to the adductor include at least two kinds of fibres which is in agreement with the presumed double innervation of the muscles, 3. all informations reaching the visceral ganglion are forwarded also towards the cerebral ganglion, 4. the excitation reaching the visceral ganglion through one of the connectives gets through the other connective in the form of feed-back to the cerebral ganglion.

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