We present a study of EEG synchrony in children with autistic spectrum disorders using a nonlinear analysis of night sleep EEG. We hypothesed a diminished level of EEG synchrony in light of recently reported altered connectivity in autism.
A lower degree of synchronization in the autistic group if comparing to the control group has been detected with maximum difference in NREM 3. Our findings are consistent with the long-range underconnectivity hypothesis in autism.