ANALYSIS OF COMPLEXITY OF EEG DURING SLEEP

New multichannel descriptors of EEG activity: complexity (Omega), tota l power (Sigma) and generalized frequency (Phi) were applied to whole night sleep analysis in 11 healthy subjects. The values of Omega and P hi decreased systematically from waking to slow wave sleep, and increa sed systematically in consecutive NREM-REM sleep cycles. The changes o f Sigma were opposite to Omega and Phi. These descriptors may be an al ternative approach to the EEG sleep analysis.