[The nonspecific mechanisms of CNS adaptation to intermittent stimuli, EEG spectral structure and the optimal parameters of rhythmic sensory actions].

Presented paper reviews recent literature data about the role of non-specific mechanisms of central nervous system adaptation and intrinsic properties of organism functional systems in the effects of rhythmical sensory influences. Among the reviewed factors which determine particular effectiveness of relatively weak, but rhythmically organized external signals, there are such as an increased sensitivity of living things to different oscillatory actions, the mechanisms of adaptive reactions, resonance central nervous system phenomena and an interaction of rhythmical sensory stimulation with organism endogenous rhythms. Special attention is paid to endogenous rhythms in the electrical activity of the brain, or to the EEG rhythms. Modern state of art in the field of spectral EEG structure analysis is discussed, and some new approaches to rhythmical sensory stimulation efficacy enhancement based on individual high resolution EEG structure features are delineated.