Harvard College

Beth Israel Deaconess Medical Center, Inc.

Eric G Lovett

Richard L Verrier

J Allan Hobson

Edward F Pace-Schott

A method for determining the sleep state of a patient includes monitoring heart rate variability of the patient and determining sleep state based on the heart rate variability. The method also may include monitoring the frequency of eyelid movements and making the sleep state determination based also on the frequency of eyelid movements. A method for determining respiratory pattern includes monitoring heart rate variability by receiving heart beat signals and determining respiratory pattern from the strength of the signals. A home-based, wearable, self-contained system determines sleep-state and respiratory pattern, and assesses cardiorespiratory risk, of a patient based on the frequency of eyelid movements, the frequency of head movements, and heart rate variability of the patient.

Growing community of inventors

Framingham, MA, United States of America

Eric G Lovett