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  • Title: [The mechanism of movement instrumental learning in a Hopfield environment in the feline motor cortex].
    Author: Maĭorov VI.
    Journal: Zh Vyssh Nerv Deiat Im I P Pavlova; 1998; 48(5):877-84. PubMed ID: 9949537.
    Abstract:
    A model of the neuronal processes in the motor cortex is proposed, which provides the mechanism for instrumentalization (voluntary reproduction) of movements primarily evoked by stimulation of the parietal cortex. The main propositions of the model are as follows: the late NMDA-dependent response of the motor cortex neurons to stimulation of the parietal cortex reflects the discharges in the recurrent collaterals of the pyramidal cell axons; learning processes in the motor cortex are based on the long-term potentiation of the efficiency of the recurrent collaterals; the Hopfield's theory of neuronal nets is applied to the processes of motor learning in the cortex. The movement instrumentalization is viewed as the stable state formation in the collaterally linked neuronal structure; the voluntary reproduction of the previously learned movement in considered as the process of transition of the neuronal structure into the stable state. The data on acetylcholine and dopamine modulatory influences on the reactions of motor cortex neurons are discussed.
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