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Specificity of the selective sensitivity of electrosensitive neuron membranes to low-frequency sinusoidal stimulation


Fiziologicheskii Zhurnal SSSR Imeni I. M. Sechenova 69(3): 335-342
Specificity of the selective sensitivity of electrosensitive neuron membranes to low-frequency sinusoidal stimulation
A difference in sensitivity of mollusk's neuron to intracellular injection of sinusoidal current (1-10 Hz; 5.10(-10)--5.10(-9) A) was found as well as the complete cessation of activity at certain frequency--amplitude characteristics of the current ("windows" of blocked activity) and an increasing activity at other frequency--amplitude parameters of the current ("windows" of growing activity). This may be due to some properties of the neuron's electrosensitive membrane: the specifics of the voltage--current characteristics, membrane capacity as well as the property known as "force--duration" relationship. The key importance lies in the dependence of the hyperpolarization of the neuron upon the amplitude and the frequency of the sinusoidal irritant.

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Accession: 044374845

PMID: 6852289



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