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Event-related activation (beta values) for parietal regions of interest, as a function of age group, search condition, target presence, and distractor presence. Panel A = Left superior parietal lobule (SPL); Panel B = Right SPL; Panel C = Left intraparietal sulcus (IPS); Panel D = Right IPS. Dist = Distractor; Targ = Target; Abs = Absent; Pres = Present. Values are means (+1 SE).
