Recurrence quantification in epileptic EEGs

We use recurrence quantification, which does not require assumptions about stationarity, length or noise, and apply it to epileptic EEG activity. We found that both preictal and EEG segments fret: of seizure activity exhibit significant transients; but preictal transients consistently occur in a context of unstable EEG activity. (C) 2001 Elsevier Science B.V. All rights reserved.