Electrophysiological properties of the cerebrovisceral connective of the fresh water mussel (Anodontacygnea L.)

Salánki, János and Lábos, Elemér and Nán, István (1964) Electrophysiological properties of the cerebrovisceral connective of the fresh water mussel (Anodontacygnea L.). A Magyar Tudományos Akadémia Tihanyi Biológiai Kutatóintézetének évkönyve, 31. pp. 133-145. ISSN 0365-3005

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Abstract

The present study has dealt with the excitability of the cerebroviseeral connective (CVC) of Anodonta cygnea, with the properties depending on stimulation of the action potential and with the features of the individual components. It was found that 1. in case of stimulation with adequate parameters the action potential consists of four, in some cases of five components which can be readily separated, 2. that the order of the components according to velocity of conduction differs from the order according to size, 3. the indices of excitability depend on the distance of leading off; led off to 20 mm from the stimulation the rheobasis is 0.1 V while the chronaxy between 10 and 100 msec, A. the dependence of the value of the components shows an S-shaped rundown on the voltage, of the stimulus, 5. in repetative stimulation we found that at 20/sec frequency the reduction of the action potential amounts to 50 per cent (in the case of 4 msec impulse period), 6. conduction velocity of the fibre components is to be found between 2.5 and 0.05 m/sec.

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