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A N Pokrovskiĭ

Publications and source records attributed to A N Pokrovskiĭ.

12 recordsLinked to original sources
PubMed1975

[Changes in the amplitude of evoked potentials of the cerebral cortex and characteristics of the associated fast oscillations].

A permanent decrease of the primary response in the external layers of the rat somatosensory cortex was observed to be connected with a considerable increase of the response in deeper cortical layers (0.5 mm and more). Fast oscillations were recorded only in the upper cortical layers. They varied independently of the primary response and were absent under nembutal anesthesia. Fast oscillations were more stable to the surface application of potassium choride. A separate source of such oscillations is suggested

Animals↗
PubMedDate not supplied

[Synaptic regulation of the state of excitable membranes].

Hodgkin-Huxly equations accounting for (stationary) control signals (synaptic conductivity and current) have stationary and periodic solutions. The domain of unstability of stationary solutions determined on the control signals plane (excitation and inhibition). On one part of the domain boundary a decrease of excitation and increase of inhibition suppress oscillations. On another part of the boundary they induced oscillations, which were not explained previously in accordance with the experimental data.

Action Potentials↗
PubMedDate not supplied

[Averaged impulse activity in a neuronal network model].

Every neuronal pool is proposed to contain identical neurons with identical interneuronal connections. A neuronal net containing two neuronal pools is considered. Two regimes are possible: 1) the asymptotically stable stationary solution of smooth equations system exists, the neuron pulses are periodical with different frequency in each pool; 2) the stationary sliding regime solution of smoothed equations exists. Periodical pulse train solution is impossible. The situation of "chaos" type is probable.

Models, Theoretical↗