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  • Title: ERPs and behavioral inhibition in a Go/No-go task in children with attention-deficit hyperactivity disorder.
    Author: Yong-Liang G, Robaey P, Karayanidis F, Bourassa M, Pelletier G, Geoffroy G.
    Journal: Brain Cogn; 2000; 43(1-3):215-20. PubMed ID: 10857697.
    Abstract:
    In order to study the behavioral responses and the brain inhibition process in children with attention-deficit hyperactivity disorder (ADHD), Event-Related Potentials (ERPs) were recorded from 30 scalp electrodes in 21 ADHD and 21 normal boys during performing a Go/No-go task. ADHD children made fewer correct responses to both Go and No-go stimuli than normal controls. The frontal N2 amplitude was larger for No-go stimuli than Go stimuli in both groups, reflecting inhibition of responding. Smaller N2 amplitudes to No-go stimuli were found in ADHD children, but only when the Go/No-go task was performed after a first stimulus-response compatibility (SRC) task. In addition, the controls exhibited a prolonged N2 only when the Go/No-go task was performed second. However, the ADHD subjects exhibited this prolonged N2 when the task was first, but not when it was second. These results suggest an inhibitory regulation problem rather an inhibition deficit in ADHD children.
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