Sleeping Babies (VIDEO) University of Iowa This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Researchers at the University of Iowa have found that babies twitch during a sleep stage called quiet sleep, not just during REM sleep. The results may show there's more communication between snoozing infants' brains and motor systems than previously known Credit Mark Blumberg lab, University of Iowa Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.