[Statistical characteristics of evoked responses to light in analysis of intercentral relationships]

In acute experiments on unanaesthetized cats immobilized with listenon, a study was made ofthe variability and interdependence of evoked responses to photic stimulation in the thalamo-cortical formations of the visual projection and the associative systems: the lateral geniculate body, pulvinar and the visual and parietal associative areas of the cerebral cortex. It has been shown that the variation coefficient of the amplitude from the maximum of the positive to the maximum of the negative oscillations in the parietal cortex statistically significantly exceeds the one in the lateral geniculate body and the projection cortex. Coefficients of paired correlation of evoked potentials' amplitudes to light more frequently reach significant levels for pairs consisting of one level formations, cortical or thalamic, than for pairs including formations of different levels.