FIELD: medicine.
SUBSTANCE: group of inventions refers to medicine, namely to determination of stage of subject's sleep. Disclosed is a system comprising a computer-readable medium for realizing a method of determining a sleep stage of a subject, wherein the system comprises a cardiac-respiratory signal providing unit for providing a cardiac-respiratory signal of the subject, an activating actigraphy unit for providing subject actor data, a first unit for determining a sleep stage for determining a stage of a subject's sleep based on a cardiac-respiratory signal of a subject, a second unit for determining a sleep stage to determine a stage of a subject's sleep based on actor's data of the subject and a determination control unit for determining one of the first sleep stage determining unit and the second sleep stage determining unit for determining the subject's sleep stage, wherein the first stage of determining the sleep stage is configured to determine latency of sleep of the subject, and the determination control unit is configured to determine the stage of sleep of the subject using the first unit for determining the stage of sleep of the subject to sleep latency and determining the stage of sleep of the subject using a second unit for determining the sleep stage after the sleep latency period.
EFFECT: group of inventions provides reliable determination of a stage of a subject.
15 cl, 6 dwg
