Abstract
Spectral signs of genetically determined predisposition to seizure characteristic of Krushinskii-Molodkina (KM) strain rats were found when studying summated cerebral potentials, namely increased power of low (1–3 Hz) frequencies in spectra of motor and visual cortex potentials together with an abrupt increase and a reduction respectively in the power of hippocampal and caudate nucleus potentials. Comparative spectra of summated electrical activity within neuronal networks [10] and those of experimentally obtained potentials as determined by modeled parameters simulating neuronal networks were found (an inverse problem of modeling). It was found that spectral signs of predisposition to seizure could reflect changes in the physiological properties of neuronal networks belonging to the rat brain structures investigated. It might be suggested on the basis of the calculations performed that genetic predisposition to seizure in KM strain rats is determined by attenuation of the inhibitory function of the caudate nucleus and by heightened excitability (reactivity) in neurons of the paleo- and neocortex.
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