Study on the usefulness of non-contact sheet sensor for sleep evaluation: a comparison with actigraphy and sheet sensor

[Speaker] Okamura, Hisayoshi:1
[Co-author] Mihara, Kengo:1, Tsuda, Akira:1
1:Kurume University (Japan)

Sleep has important homeostatic functions. Therefore, sleep deprivation is considered to be a stressor being influential on the brain, as well as many body systems. The standard methods in evaluating the sleep quality are polysomnography (PSG) and/or wrist actigraphy (Acti). Recently, non-contact sheet sensor (SS) has been developed for the sleep evaluation. However, the method still needs a further examination in light of the accuracy. Thus, to investigate validity of SS analyse, we performed simultaneous recordings of SS and Acti in twenty healthy university students.
The sleeping time, sleep onset latency, and sleep efficiency evaluated by SS showed linear positive correlations with those estimated by Acti. Sleep-wake discrimination closely matched between SS and Acti (concordance rate was 94.24%). In addition, body motion during sleep measured by SS also closely approximated Acti. These results suggested that sleep evaluation by SS is a useful surrogate method for Acti.
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