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Two studies were conducted on the effects of methylphenidate (20 mg) on young adults' event-related potentials. Although this stimulant elevated heart rate in study 1 (n = 14), it failed to affect either performance or amplitude of the late positive component (LPC) obtained from two versions of the continuous performance test (CPT). Because performance on(More)
This study involved 27 children displaying cross-situational hyperactivity and 14 youngsters with borderline hyperactivity. For all patients, evoked potentials were recorded after receiving 0 (placebo), 0.3 and 0.6 mg/kg methylphenidate. Under each pharmacologic condition, subjects were administered: a photic stimulation procedure; two versions of the(More)
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