Results There were effects of diagnosis (CTRL > ADHD unmedicated), medication (on > off), and motivation (reward and/or response cost > baseline) on N2 and P3 amplitude, although the N2 diagnosis effect did not reach statistical significance ( p = .1).
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Effects of motivation and medication on electrophysiological markers of response inhibition in children with attention-deficit/hyperactivity disorder.
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N2 amplitude, an index of response inhibition ( 9 ) or conflict detection/resolution ( 10 ), was reduced, although this fell just short of statistical significance.
Of note, the diagnosis effect for the N2 did not quite reach statistical significance, possibly providing insufficient scope for measuring relationships between this index and motivation.