The investigational product to be used in this trial is the ResMed Biomotion Sensor (ResMed Sensor Technologies, Dublin, Ireland). This device uses very low power radio waves (\~1/100th of the strength of a mobile phone signal) to detect respiratory movements of a person while asleep- without physical contact with the individual. The device is designed to measure up to 5 feet, so that only the person on the side of the bed nearest the device is monitored. Algorithms have been developed to analyze the respiratory movement signals and extract information about respiration rate, bodily movements, sleep/wake patterns and sleep disordered respiration.