In the present experiment. we used event-related potentials (ERP) to investigate the role of immediate and delayed feedback in an artificial grammar learning task. Two groups of participants were engaged in classifying non-word strings according to an underlying rule system. not known to the participants. https://www.spidertattooz.com/Essie-Gel-Couture-Inside-Scoop-0-5-oz-1088-p15287/