Abstract: Systems and methods for detecting a general breathing event and for anticipating an onset of an obstructive sleep apnea (OSA) event. The method for detecting a general breathing event includes receiving a plurality of signals from at least one microphone. The method also includes determining a one-sided power spectral density from the received signals. The method further includes distinguishing each received signal as either a breath signal or a background noise signal. The method still further includes calculating a breath signature by processing each breath signal.

Abstract: An apparatus and method for causing a conditioned reflex in a person. The apparatus includes a detector configured to detect a physiological condition of the person, the physiological condition associated with an onset of a sleep apnea event. The apparatus also includes a controller configured to transmit a stimulus to the person upon a detection of the physiological condition. The controller is also configured to determine if the physiological condition is still occurring. The controller is further configured, upon a determination that the physiological condition is still occurring, to repeat the transmitting and determining steps.