The invention relates to a method and a device for evaluating an intensive EEG or an EEG during anaesthesia, according to which time domain and/or frequency range parameters are determined from the EEG graphs (112), the determined parameters being used in multivariate classification functions and the intensive EEG or EEG during anaesthesia being automatically divided into stages (116) as a result thereof. The EEG graphs are also analysed for interfering signal components from the quantity of biosignals of graphs characteristic of intensive EEGs or EEGs which are not performed during anaesthesia (114,118), and artifacts. If such interfering signal components are identified, the existence of biosignals of graphs characteristic of intensive EEGs or EEGs which are not performed during anaesthesia is verified by artifact analysis (120,122,126) in the absence of artifacts, and is not verified if artefacts are identified.
METHOD AND DEVICE FOR EVALUATING AN INTENSIVE EEG OR AN EEG DURING ANAESTHESIA