<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>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.</p>
</abstract>

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.

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

Institute of Metrology and Biomedical Engineering

Polish Journal of Medical Physics and Engineering

The increased movement of eyes and eyelids is characteristic of the rapid eye movement (REM) 
sleep stage, making it an important indicator in sleep...

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

Pubblicato online: 07 mar 2014

Pagine: 85 - 91

DOI: https://doi.org/10.2478/pjmpe-2013-0004

This content is open access.