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Number of results
2013 | 19 | 2 | 85-91

Article title

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


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The 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 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 through
a photodetector, performs analog signal processing and analog to digital conversion (ADC).
The data is transmitted wirelessly to a computer, where the results can be displayed, stored
and analyzed with a dedicated software, which also provides control over the device.
The hardware is embedded in a mask, which is put over the patient's eyes. User safety in terms
of mechanical, electrical and optical dangers has been ensured. The device was tested
on a napping subject.









Physical description


07 - 03 - 2014


  • Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, Św. A. Boboli 8, 02-525 Warsaw, Poland
  • Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, Św. A. Boboli 8, 02-525 Warsaw, Poland


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