TY - JOUR T1 - REduced gaba concentration in attention-deficit/hyperactivity disorder AU - Edden RE, Crocetti D, Zhu H, Gilbert DL, Mostofsky SH Y1 - 2012/07/01 N1 - 10.1001/archgenpsychiatry.2011.2280 JO - Archives of General Psychiatry SP - 750 EP - 753 VL - 69 IS - 7 N2 - Context  Attention-deficit/hyperactivity disorder (ADHD) is a developmental disorder characterized by a deficit in behavioral inhibition. Recent evidence also suggests a deficit in cortical inhibition via the GABA (γ-aminobutyric acid)–ergic system.Objective  To investigate the GABAergic component of ADHD using magnetic resonance spectroscopy.Design  Cross-sectional study.Setting  Participants were recruited through local schools, local pediatric and other community clinics, and through advertisement in regional publications. Magnetic resonance spectroscopy was performed within the research institute.Participants  Children (age range, 8-12 years) in a typically developing control group vs a group with ADHD were compared.Main Outcome Measures  J-difference–edited magnetic resonance spectroscopy at 3 T was used to measure GABA concentration in a volume that included primary somatosensory and motor cortices.Results  GABA concentration is reduced in children with ADHD compared with typically developing control subjects.Conclusion  Our finding of reduced GABA concentration in ADHD is concordant with recently reported deficits in short intracortical inhibition in ADHD and suggests a GABAergic deficit in ADHD. SN - 0003-990X M3 - doi: 10.1001/archgenpsychiatry.2011.2280 UR - http://dx.doi.org/10.1001/archgenpsychiatry.2011.2280 ER -