Potential use of actigraphy to measure sleep in monkeys: comparison with behavioral analysis from videography

摘要

DEAR EDITOR,Since the epoch-making observations of circadian rhythm in Mimosaceae plants,sleep has been investigated for centuries(de Mairan,1729;Du Monceau,1758).As a natural and reversible state,sleep is marked by reduced responsiveness to external stimuli,relative inactivity,and loss of consciousness.Although reduced responsiveness could potentially introduce significant danger to survival,nearly all animals in nature sleep.