Abstract: The invention relates to an apparatus and a method for the stationary and ambulant detection, recording and quantitative analysis of sleep disorders, sleep-related respiratory disturbances, cardiac rhythm disturbances, myoclonia, variations in blood pressure, depth of sleep parameters, movement parameters and disorder parameters for the quality control of diagnoses. According to the invention, various sensors detect a patient's body functions which are stored in a recorder. The stored data are then transferred to a computer where they are analyzed and evaluated.