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. Author manuscript; available in PMC: 2016 Apr 4.
Published in final edited form as: J Am Acad Child Adolesc Psychiatry. 2009 Mar;48(3):320–329. doi: 10.1097/CHI.0b013e318195bd15

Fig. 2.

Fig. 2

Mean IBI, vagal tone, heart rate variability, activity counts, and eye-gaze avoidance for boys and girls with FXS plotted in successive 5-minute periods of intensive social interaction. Data are displayed according to whether the children were taking psychoactive medication. Standard error bars are also shown. 0 min = baseline; FXS = fragile X syndrome; HR = heart rate; IBI = interbeat interval; MED = medication.