Computer-Implemented Method, Computer Program Product, and Arousal Detection System

A method for detecting an arousal in a sleep session of a subject that includes receiving a first signal comprising information about a first probability distribution of sleep stage classes during the first epoch. The method further comprises receiving a second signal comprising information about a second probability distribution of the sleep stage classes during the second epoch, determining a continuity metric representative of a difference between the first probability distribution and the second probability distribution, and determining a presence of an arousal based on the continuity metric. Further, there is provided an arousal detection system for detecting an arousal in a sleep session of a subject. The arousal detection system comprises a processing system and a sensor interface. The processing system is configured to perform the computer-implemented method.