A miniature actigraph worn about the wrist (Mini Motionlogger, Ambulatory Checking, Inc. Ardsley, NY) was used To guage sleep quality objectively, making it attainable to watch sleep below normal circumstances with minimal distortions. The actigraph actions wrist activity using a piezoelectric factor and translates wrist movements into an electrical https://www.youtube.com/watch?v=PgNzdZr0_hg