Differences in the chemical sensitivity of nerve pathways in the central nervous system of fresh-water mussel (Anodonta cygnea L.)

Salánki, János and Varanka, István (1971) Differences in the chemical sensitivity of nerve pathways in the central nervous system of fresh-water mussel (Anodonta cygnea L.). A Magyar Tudományos Akadémia Tihanyi Biológiai Kutatóintézetének évkönyve, 38. pp. 87-96. ISSN 0365-3005

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Abstract

On the basis of experimental results obtained after applying drugs onto the cerebral and visceral ganglia during simultaneous recording of electrical activity from several nerves it was stated that the same substance causes different effects on the different nerves. Acetylcholine stimulates the neurones of the cerebro-visceral pathways and that of the anterior pallial nerve, and inhibits the cerebro-cerebral and viscerocerebral paths. Serotonin activates the cerebro-visceral and cerebro-cerebral pathways and also the neurones of the posterior pallial nerve, hut inhibits the viscero-cerebral paths. Dopamine caused either the stimulation of the investigated pathways or was ineffective. The stimulated or inhibited pathways influence secondarily the activity of other groups of neurones in the same or in an other ganglion, playing important role in the functional differentiation of the central nervous system connected with the heterogeneous chemical sensitivity of neurones and neural pathways.

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