Actigraphy for Monitoring Wake and Sleep in Healthy Infants: A Laboratory Study Xi Long 1,2,* , Renée Otte 1, Eric van der Sanden 1, Jan Werth 2 and Tao Tan 3 1 Department of Family Care Solutions, Philips Research, 5656 AE Eindhoven, The Netherlands; renee.otte@philips.com (R.O.)...