From ontogenesis to clinical practice: waking up to infant sleep.

This article describes the author's research journey exploring infant and toddler sleep. From polygraphic recording in hospital nurseries to using videosomnography in homes, the author traced the longitudinal development of infant/toddler nighttime sleep and waking behaviors. The home-based video observations led to a redefinition of a pediatric milestone; namely, "sleeping through the night," and provided a framework for assessing and treating infant/toddler nighttime sleep problems.