Journal
BRAIN RESEARCH
Volume 1648, Issue -, Pages 277-289Publisher
ELSEVIER
DOI: 10.1016/j.brainres.2016.07.011
Keywords
Autism; Excitation/inhibition; GABA; Glutamate
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The balance of neural excitation and inhibition (E/I balance) is often hypothesised to be altered in autism spectrum disorder (ASD). One widely held view is that excitation levels are elevated relative to inhibition in ASD. Understanding whether, and how, Ell balance may be altered in ASD is important given the recent interest in trialling pharmacological interventions for ASD which target inhibitory neurotransmitter function. Here we provide a critical review of evidence for E/I balance in ASD. We conclude that data from a number of domains provides support for alteration in excitation and inhibitory neurotransmission in ASD, but when considered collectively, the available literature provide little evidence to support claims for either a net increase in excitation or a net increase in inhibition. Strengths and limitations of available techniques are considered, and directions for future research discussed. (C) 2016 Elsevier B.V. All rights reserved.
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