[Analysis of the plastic properties of the postsynaptic neuron in the sensory motor cortex in response to repeated microphoretic administration of gamma-aminobutyric acid].

The absence of habituation effect to the iontophoretic repetitive applications with 120, 30 and 15 seconds intervals of inhibition transmitter--gamma aminobutiric acid (GABA)--in sensomotor cortex neurons has been established. Earlier habituation effect has been discovered under the same experimental conditions during other transmitter administration--acetilcholine. A hypothesis concerning the absence of biological expendiency of habituation in the GABA-ergic system is suggested.