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  • Title: [Changes in the cholinosensitivity of sensomotor cortex neurons during conditioned reflex extinction].
    Author: Koshtoiants OKh, Antipina MIu, Kol'tsova AV.
    Journal: Zh Vyssh Nerv Deiat Im I P Pavlova; 1979; 29(5):923-9. PubMed ID: 494795.
    Abstract:
    Characteristics of neuronal responses of the sensorimotor cortex to ionophoretically administered neuromediators (acetylcholine, L-glutamate) were studied in rabbit in the course of extinction of conditioned defensive reflex. In the majority of neurones the extinction of the conditioned reflex is accompanied by a drop of cholinosensitivity. In a number of neurones the extinction of reflexes either does not change the reaction to acetylcholine, or enhances it. The analysis of these reactions permits to assume the existence of a group of neurones directly involved in the formation, fixation and storage of the temporary connection.
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