Daily 1 h samples of activity-wheel performance yielded activity records in which the 4-5 day estrous cycle was evident in 23 of 36 albino rats. Mean activity level was still increasing at the conclusion of 60 daily periods of measurement, but a correlational analysis revealed marked stability of relative activity level.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.