| http://www.w3.org/ns/prov#value | - The researchers tracked the participants??? activity levels using sensors worn on the wrist that detected the wearer???s movements. ???Most people don???t move when they???re asleep, and we developed a way to use the data we collected as a marker for whether a person was asleep or awake,??? says first author Yo-El Ju, MD, assistant professor of neurology. ???This let us assess sleep eff
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