Abstract
The effect of application of strychnine and calcium and of post-tetanic potentiation on the dynamics of gradual decay of dendritic potentials in the association cortex, which is regarded as monosynaptic habituation, was studied in acute experiments on cats anesthetized with pentobarbital. Despire a significant increase in amplitude of dendritic potentials after strychnine application or calcium enrichment of the physiological saline, the time course of habituation was unchanged. The course of habituation also remained unchanged during post-tetanic potentiation. It is concluded that habituation of dendritic potentials is due to processes taking place in the postsynaptic dendrite membrane itself and is independent of postsynaptic inhibition or transmitter exhaustion in presynaptic endings.
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I. S. Beritashvili Institute of Physiology, Academy of Sciences of the Georgian SSR, Tbilisi. Translated from Neirofiziologiya, Vol. 16, No. 2, pp. 208–213, March–April, 1984.
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Koreli, A.G. Possible mechanisms of dendritic potential habituation in the cat association cortex. Neurophysiology 16, 172–176 (1984). https://doi.org/10.1007/BF01052310
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DOI: https://doi.org/10.1007/BF01052310