Abstract: The present disclosure pertains to a method and system for determining the blood pressure dip of a subject based on features extracted from information generated by an on-body sensor system. The on-body sensor system includes a photoplethysmographic (PPG) sensor and a motion sensor. Blood pressure variation is captured throughout the day and utilized along with determinations of whether a subject is asleep or awake. The blood pressure determinations collected throughout the day, along with determinations of sleep periods, are used to determine a blood pressure dip for the day the on-body sensor system is worn.

Abstract: A user device that receives plural strings of data corresponding to physiological data, generated from a training model trained in an unsupervised manner using concurrently implemented loss functions, and using a distance metric, relative to a threshold, applied between the plural strings to provide an indication of authenticity.

Abstract: A pressure distribution profile of a subject lying on a mat is used to derive a measure of pulse wave velocity. Beat locations are identified where beat pressure signals are identified, and pulse timing information is obtained from the beat locations. By determining a subject posture, the beat locations are mapped to anatomical body locations and arterial path length information is obtained for the anatomical body locations. A pulse wave velocity is then estimated from the pulse timing information and arterial path lengths. This method enables measuring the pulse wave velocity during sleep in a comfortable, easy and unconstrained manner. This is accomplished by analyzing signals from a pressure sensitive surface for example on top of a bed mattress or by embedding a pressure sensitive layer in the mattress.

Abstract: A user device that receives plural strings of data corresponding to physiological data, generated from a training model trained in an unsupervised manner using concurrently implemented loss functions, and using a distance metric, relative to a threshold, applied between the plural strings to provide an indication of authenticity.

Abstract: A system for delivering sensory stimulation comprises a sensor configured to measure autonomic nervous system activity information of a user during a sleep session; a sensory stimulator configured to deliver sensory simulation to the user during the sleep session; and a computer system. One or more physical processors of the computer system are programmed with computer program instructions which, when executed cause the computer system to: obtain the autonomic nervous system activity information of the user; determine parasympathetic nervous system information based on the obtained autonomic nervous system activity information of the user; and provide input to the sensory stimulator based on the determined parasympathetic nervous system information, the provided input causing the sensory stimulator to deliver the sensory stimulation to the user based on the determined parasympathetic nervous system information.

Abstract: A sleep stage classification system (330) is provided. A sleep stage analyzing is performed based on an output signal (100a) of a PPG sensor (100). An estimation unit (310) is adapted to estimate features associated to a respiratory effort of a user based on the output signal (100a) of the PPG sensor (100) and to output a respiratory effort feature signal. A respiratory effort determining unit (320) is adapted to determine to respiratory effort based on the respiratory effort feature signal from the estimation unit (310). A sleep stage classification unit (330) is adapted to classify a sleep stage of a user based on the determined respiratory effort from the respiratory effort determining unit (320) and to output a sleep stage classification signal (310).

Abstract: A pressure distribution profile of a subject lying on a mat is used to derive a measure of pulse wave velocity. Beat locations are identified where beat pressure signals are identified, and pulse timing information is obtained from the beat locations. By determining a subject posture, the beat locations are mapped to anatomical body locations and arterial path length information is obtained for the anatomical body locations. A pulse wave velocity is then estimated from the pulse timing information and arterial path lengths. This method enables measuring the pulse wave velocity during sleep in a comfortable, easy and unconstrained manner. This is accomplished by analyzing signals from a pressure sensitive surface for example on top of a bed mattress or by embedding a pressure sensitive layer in the mattress.

Abstract: The present disclosure pertains to a method and system for determining the blood pressure dip of a subject based on features extracted from information generated by an on-body sensor system. The on-body sensor system includes a photoplethysmographic (PPG) sensor and a motion sensor. Blood pressure variation is captured throughout the day and utilized along with determinations of whether a subject is asleep or awake. The blood pressure determinations collected throughout the day, along with determinations of sleep periods, are used to determine a blood pressure dip for the day the on-body sensor system is worn.

Abstract: An optical vital signs sensor (100) is provided, which comprises a PPG sensor (102), a force transducer (130) configured to measure a force applied via the PPG sensor (102) to a skin (1000) of the user and a processing unit (140) configured to extract information regarding a blood volume pulse from the output of the PPG sensor (102) and to map the extracted information to the blood pressure value at a specific force applied to the PPG sensor (102).

Abstract: Presented are concepts for managing a blood-pressure variation of a patient. One such concept provides a method comprises the step of determining a target exercise intensity for the patient based on an obtained measure of diurnal blood pressure dip of the patient. The method also comprises determining a target exercise timing for the patient based on an obtained measure of the circadian rhythm the patient. In this way, a target exercise intensity and target exercise timing may be determined and communicated to the patient for the purpose of managing or controlling a blood pressure variation through the combined timing and intensity of physical exercise.

Abstract: The present invention relates to a device (16) and method for monitoring a physiological state of a subject (32). To reduce the energy consumption but still provide a high accuracy, the proposed device comprises a sensor interface (18) for obtaining from a sensor (20) a sensor signal indicative of a vital sign of a subject; a power storage interface (22) for obtaining a charge value indicative of a charge state of a power storage (24) powering the sensor; a duty cycle module (28) for controlling the duty cycle of the sensor based on the charge value; and a processing unit (26) for extracting at least one feature indicative of a physiological state of the subject from the sensor signal.