The aim of this study is to investigate the effects of Methylphenidate on neural activity
underlying inhibitory control and error monitoring in healthy adults. More specifically, the
investigators aim to establish the baseline modulatory effect of Mehtlylphenidate on
bottom-up and top-down aspects of these cognitive processes. This work will further our
understanding of Attention Deficit Hyperactivity Disorder, Methylphenidate, and executive
functioning.