- Journal Details
- Format
- Journal
- eISSN
- 1898-0309
- First Published
- 30 Dec 2008
- Publication timeframe
- 4 times per year
- Languages
- English
Search
- Open Access
An infrared-based device for non-invasive monitoring of eyelid movement during sleep
Page range: 85 - 91
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.
Key words:
- sleep
- eye
- movement detection
- infrared
- rapid eye movement