[Objective EEG correlates of deprivation in hypnosis-modulated catalepsy]

EEG was registered in healthy volunteers before and after their entry into modeling (hypnotic) catalepsy. The brain activity recorded under standard electrode placement (the 10-20 international classification) was processed using a special computer program. The data obtained were digitally represented as sets of standard parameters of EEG patterns in 0,5-32 Hz diapason (alpha-, beta1-, beta2,-, theta-, delta-rythms). These parameters were compared under different functional tests particularly connected with the control of sensomotor brain activity. Calculated coefficients of interhemisphere asymmetry allow one to evaluate dynamics of neuropsychological processes of deprivating adaptation related to low-frequency bands. EEG-parameters precisely evaluating the level of hypnotic catalepsy have been established.