Grand-averaged ERP waveforms elicited by related (solid lines) and unrelated (dotted lines) targets at electrode sites, FP1, FP2, O1 and O2. The grey shaded area indicates the time window used for analyzing the N/P150 component (125-175 ms). Panel A shows responses to targets preceded by 50 ms primes, while panel B shows responses to targets preceded by 100 ms primes. 279 × 431mm (300 × 300 DPI). To view this figure in colour, please visit the online version of this issue.