REM SLEEP DETECTION PILLOW

摘要

PURPOSE:To simply detect a sleep state of REM sleep or non-REM sleep without detecting a brain wave. CONSTITUTION:By using a piezoelectric sheet 3, etc., installed in the inside of a pillow 1 as a detecting means, a body motion which is a feature of a REM sleep state is caught as a motion of the head. Whether the sleep state it the REM sleep state or a non-REM sleep state is decided by its detection frequency.