Patent ID: 11896386
Assignee: NOX MEDICAL EHF
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method for determining whether a first signal and a second signal of a physiological study originate from a same intended subject, the method comprising:
extracting the first signal from the physiological study, the physiological study being a sleep study, the first signal being a respiratory inductance plethysmography (RIP) signal obtained in the sleep study;
extracting the second signal from the physiological study, the second signal being a pulse-measuring signal obtained in the sleep study, and data of the RIP signal and data of the pulse-measuring signal being stored on a memory storage;
determining a coherency value between components of the RIP signal and components of the pulse-measuring signal;
determining whether the RIP signal and the pulse-measuring signal originate from the same intended subject based on the determined coherency value; and, wherein determining the coherency value includes
sampling a first frequency band of the RIP signal,
sampling a second frequency band of the pulse-measuring signal, and
determining whether a synchronous relationship exists between components of the first frequency band of the RIP signal and the second frequency band of the pulse-measuring signal,
wherein the first frequency band and the second frequency band include heart rate and/or harmonics of the heart rate and/or respiratory rate and/or harmonics of the respiratory rate in the subject during the physiological study,, wherein
in a case that the RIP signal and the pulse-measuring signal are determined to originate from the same intended subject, data of the physiological study is indicated to be usable for diagnosing a sleep disorder of the intended subject or determining that the intended subject does not suffer from a sleep disorder, and
in a case the case that the RIP signal and the pulse-measuring signal are determined to not originate from the same intended subject, data of the physiological study is indicated to be falsified.