METHOD OF EVALUATION OF BIOELECTRIC PROCESSES OF BRAIN Russian patent published in 1995 - IPC

FIELD: medicine. SUBSTANCE: method comprises steps of selecting as parameters for coding at evaluation of states of bioelectric processes of brain presence/absence, frequency and amplitude of alpha-, delta-, theta-, beta-rhythms in each of taking off spots of electroencephalogram and frequency phase relations of rhythms for pairs of taking off spots; determining presence or absence of rhythm according to a criterion of presence of absence of energetically distinct spike in a current spectrogram of the electroencephalogram; in addition determining correlated parameters, characterizing variation capability of rhythm frequency and degree of interhemisphere asymmetry; displaying ranges of frequencies of delta-, theta-, alpha-, beta-rhythms by respective color of optical spectrum; making a mapping separately for each rhythm in the form of images of local geometrical figures for each taking off spot; coding presence or absence of an image of a figure in a given taking off spot; coding a frequency of the rhythm by a hint of a main color, corresponding to the given rhythm; coding an amplitude of the rhythm by a change of a linear dimension of a geometrical figure; coding paired phase relation of the phase frequencies of rhythms in the form of readings of phase difference indicator; placing an image of the phase differences on the map between respective pair of images of the geometrical figures; performing dynamic graphic displaying of a row of mappings for a series of current values of parameters in a mode of scanning over a period of the electroencephalogram analysis in order to visually evaluate dynamics of changes of current state of bioelectric processes of brain; in order to carry out the visual evaluation of correlated over a period of analysis state of bioelectric processes of brain performing a static graphic displaying of mappings for averaged values of parameters. EFFECT: enhanced accuracy and reliability of evaluation. 3 cl