A bedside camera detects REM sleep and agrees with a clinical EEG
I build a device called the INSPEC that detects REM sleep from a bedside infrared camera instead of electrodes. It watches the face under IR light and measures frame-to-frame pixel variance in the eye region. During quiet sleep the face is stable. During REM the eye movements under the lids produce measurable variance, which the device aggregates over time before it flags a REM period. Toss detection, whole-frame motion rejection, and face tracking filter out body movement and out-of-frame periods. After I gave a talk on contactless REM detection, a sleep lab loaned me a clinical-grade EEG…
A bedside camera detects REM sleep and agrees with a clinical EEG launched on July 5, 2026 with 10 votes, #1,657 of 24,623 launches that month and more than 90% of that year's launches.
In plain words
INSPEC is a bedside infrared camera system that detects REM sleep without electrodes by tracking eye movements beneath closed eyelids. The device measures pixel variance in the eye region under infrared light, using face tracking and motion rejection to filter out body movement and distinguish REM periods from quiet sleep. The maker tested INSPEC against clinical-grade EEG recordings and independent sleep stage classifiers, finding REM detections aligned with professional diagnostic results. It is for sleep researchers and individuals interested in contactless sleep monitoring.
written from the facts on this page · September 2026
From the sources
I ran the INSPEC session with the CGX Patch EEG recording through three sleep stage classifiers: two models from ezscore (ez6 and ez6moe), and Dreamento's DreamentoScorer. All three classifiers are trained on the ZMax, so on the CGX they flipped between stages a little too often. The REM marks fall at the same times the…
In the maker’s words, at launch
I build a device called the INSPEC that detects REM sleep from a bedside infrared camera instead of electrodes. It watches the face under IR light and measures frame-to-frame pixel variance in the eye region. During quiet sleep the face is stable. During REM the eye movements under the lids produce measurable…
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