Journal
CURRENT OPINION IN NEUROLOGY
Volume 28, Issue 2, Pages 110-116Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/WCO.0000000000000181
Keywords
attention deficit hyperactivity disorder; autism spectrum disorder; biomarkers; electroencephalography
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Funding
- Department of Psychiatry, UCLA
- NIMH [K23MH094517]
- [NS80160]
- NATIONAL INSTITUTE OF MENTAL HEALTH [K23MH094517] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE [R21NS080160] Funding Source: NIH RePORTER
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Purpose of review The heterogeneity in clinical presentation and outcome in neurodevelopmental disorders such as attention deficit hyperactivity disorder (ADHD) autism spectrum disorder (ASD) necessitates the identification and validation of biomarkers that can guide diagnosis, predict developmental outcomes, and monitor treatment response. Electrophysiology holds both practical and theoretical advantages as a clinical biomarker in neurodevelopmental disorders, and considerable effort has been invested in the search for electroencephalography (EEG) biomarkers in ADHD and ASD. Recent findings Here, we discuss the major themes in the evaluation of biomarkers and then review studies that have applied EEG to better inform diagnosis, focusing on the controversy surrounding the theta:beta ratio in ADHD; prediction of risk, highlighting recent studies of infants at high risk for ASD; and treatment monitoring, presenting new efforts in the redefinition of outcome measures in clinical trials of ASD treatment. Summary We conclude that insights gained from EEG studies will contribute significantly to a more mechanistic understanding of these disorders and to the development of biomarkers that can assist with diagnosis, prognosis, and intervention. There is a need, however, to utilize approaches that accommodate, rather than ignore, diagnostic heterogeneity and individual differences.
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