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J Neurodev Disord. 2013 Sep 16;5(1):24. doi: 10.1186/1866-1955-5-24.

Resting state EEG abnormalities in autism spectrum disorders.

Author information

1
Department of Psychiatry, University of Texas Southwestern, Dallas, TX, USA.
2
Department of Pediatrics, University of Texas Southwestern, Dallas, TX, USA.
3
Center for Autism Spectrum Disorders, Bond University, Gold Coast, Australia.
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Contributed equally

Abstract

Autism spectrum disorders (ASD) are a group of complex and heterogeneous developmental disorders involving multiple neural system dysfunctions. In an effort to understand neurophysiological substrates, identify etiopathophysiologically distinct subgroups of patients, and track outcomes of novel treatments with translational biomarkers, EEG (electroencephalography) studies offer a promising research strategy in ASD. Resting-state EEG studies of ASD suggest a U-shaped profile of electrophysiological power alterations, with excessive power in low-frequency and high-frequency bands, abnormal functional connectivity, and enhanced power in the left hemisphere of the brain. In this review, we provide a summary of recent findings, discuss limitations in available research that may contribute to inconsistencies in the literature, and offer suggestions for future research in this area for advancing the understanding of ASD.

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