# Performance of seven consumer sleep-tracking devices compared with polysomnography

Chinoy ED, Cuellar JA, Huwa KE, et al. · Sleep 44(5):zsaa291 · 2021



## Key finding

Consumer devices estimated total sleep well but were poor at sleep stages — trust duration, not deep/REM.



[Read the paper](https://pubmed.ncbi.nlm.nih.gov/?term=Performance+of+seven+consumer+sleep-tracking+devices+compared+with+polysomnography)

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