Detection of Sleep with New Preprocessing Methods for EEG Analyzing

A selforganized map was designed to learn and detect sleep stages will be described. Initial the input data were preprocessed with Difference Power Spectra (DPS (german: DLS)). The associative fields of the Kohonen map are directly transformed by frequency spectra. Interference phenomena are probably indicating the influence of biosignals with a source in the reticular system of a human brain.