With the help and expertise of our terrific postdoctoral fellow from Israel, Avi Sadeh, we began an endeavor that continues to serve a core function in our lab: using actigraphy to estimate sleep patterns. The initial studies focused on defining the limits of the technology in our studies and developing algorithms to discriminate sleep and wake.

Sadeh, A., Sharkey, K., and Carskadon, M.A. Activity-based sleep-wake identification: an empirical test of methodological issues. Sleep 17(3):201-207, 1994.

Sadeh, A., Acebo, C., Seifer, R., Aytur, S., and Carskadon, M.A. Activity-based assessment of sleep-wake patterns during the 1st year of life. Infant Behavior and Development 18:329-337, 1995.