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US 12,178,600 B2Granted
Wakefulness and sleep stage detection using respiration effort variability
AssigneeAlfred E. Mann Foundation for Scientific Research
InventorsBrian Michael Shelton, Sahar Elyahoodayan
Life of this patent
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Abstract
The present disclosure generally relates to systems and methods for monitoring and/or the sleep stage of an individual using one or more sensors, and methods of treating medical conditions related thereto (e.g., obstructive sleep apnea).
Claims22
A computer-implemented system for determining a level of wakefulness and/or sleep stage of a human subject, comprising:
- a first sensor configured to detect a signal indicative of respiration effort by the human subject when placed on or in proximity to one or more regions of a chest and/or head of the human subject;
- and
- a controller comprising a processor and memory, communicatively linked to the first sensor and configured to receive the signal from the first sensor indicative of respiration effort by the human subject, and to use the received signal to:
- determine a mean respiration interval for a finite trailing window,
- determine a number of respiration intervals within the finite trailing window that deviate from the mean respiration interval by less than a threshold parameter, and
- determine a level of wakefulness and/or sleep stage of the human subject, based on the number of respiration intervals that deviate from the mean respiration interval by less than the threshold parameter.
3 more elements
A method for determining a level of wakefulness and/or sleep stage of a human subject, comprising:
- a) detecting a signal indicative of respiration effort by the human subject, using a first sensor placed on or in proximity to one or more regions of a chest and/or head of the human subject;
- b) transmitting the detected signal to a controller communicatively linked to the first sensor and configured to receive the signal from the first sensor indicative of respiration effort by the human subject;
- c) determining, by the controller, a mean respiration interval for a finite trailing window, using the received signal;
- d) determining, by the controller, a number of respiration intervals within the finite trailing window that deviate from the mean respiration interval by less than a threshold parameter;
- and
- e) determining, by the controller, a level of wakefulness and/or sleep stage of the human subject, based on the number of respiration intervals that deviate from the mean respiration interval by less than the threshold parameter.
3 more elements
Dependencies are inferred from the claim text.