Title: Meta-Analysis of Event-Related Potentials in Episodic and Semantic Memory

Introduction: An event-related potentials (ERP) study examined semantic and episodic memory effects and variability in the size and distribution of these effects across different labs. In studies using ERPs, some researchers have argued that ERP markers of semantic and episodic memory — the N400 and fN400, respectively — reflect the same neuropsychological response (Voss & Federmeier, 2011). Others have suggested that they have distinct spatial-temporal signatures and reflect different psychological processes (Bridger et al, 2012). We conducted a cross-lab experiment to address this issue and to illustrate a new approach to cross-lab analysis of ERPs.