Polysomnographic validation of a wireless dry headband technology for sleep monitoring in healthy young adults

- A wireless headband technology (WS) was compared with polysomnography (PSG).
- Results showed an agreement ranging from moderate to high.
- The WS underestimated wake after sleep onset and deep sleep compared to PSG.
- The WS overestimated the length of REM sleep compared to PSG.

The present study aimed to explore the validity and reliability of a wireless dry headband technology for sleep monitoring (WS), through a comparison with concurrent polysomnographic (PSG) recording in healthy young adults. Eleven volunteers (7 females; mean age ± SD: 24.75 ± 3.62 years) took part in the study, wearing the WS for two overnight PSG recordings in the sleep laboratory. The WS was compared to PSG in the identification of wake, light, deep and REM sleep. The WS sensitivity and specificity were 97.6% and 56.1%, respectively. The WS agreement with PSG, measured by Cohen's kappa, was 0.56 for light sleep, 0.70 for deep sleep, and 0.67 for REM sleep. The present results showed that the agreement ranged from moderate to high between PSG and the WS, while wakefulness detection was observed to be a limitation of the WS.