The union of the state: myoclonic twitching is coupled with nuchal muscle atonia in infant rats.

摘要: Active sleep (AS), as measured by the occurrence of myoclonic twitching (MT), is most prevalent behavioral state in newborn rats. Historically, AS has been considered a developmental precursor REM sleep, but recently this idea questioned. In present study, authors assess, 2-, 5-, and 8-day-old rats, relationship between MT nuchal muscle atonia, widely recognized component sleep. At all ages, atonia preceded persisted until awake behaviors occurred. addition, tone decreased gradually during transitions from behavior to twitching. Thus, infancy occurs against backdrop result that consistent with view