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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Clin Auton Res. 2016 Aug 4;26(6):423–432. doi: 10.1007/s10286-016-0375-5

Fig. 1.

Fig. 1

Sleep structure (hypnogram, top) and heart rate (HR, bottom) in a child with autism spectrum disorder (ASD, left) and a typically developing child (TD, right). Hypnogram definitions: U undefined; L light, W wake; N1, N2, N3 + N4 non-REM N1, N2 and N3 + N4; REM rapid eye movement sleep