An infrared-based device for non-invasive monitoring of eyelid movement during sleep


Increased movement of eyes and eyelids is characteristic of the rapid eye movement (REM) sleep stage, making it an important indicator in sleep monitoring. A prototype device was designed to detect this activity in a non-invasive way by means of measuring infrared light intensity reflected off the eyelid. The system converts the light intensity into current… (More)


5 Figures and Tables