Affiliation: College of Arts and Sciences, Department of Psychology and Neuroscience
Behavioral and neural measures of reading offer divergent estimates of the time-course of word recognition. The current work aims to reconcile Eye-Movement (EM) and Event-Related Potential (ERP) measures with a series of experiments in which methodological differences are reduced or eliminated. Experiment 1 shows that Masked Repetition priming affects an early ERP component (N250) which overlaps with the timeframe of EM effects, and a later component (N400). These effects occur in both isolated word recognition and sentence reading tasks. Experiments 2-4 show that processing is delayed when semantically unrelated or physically deviant information is present in the parafovea. The time-course of the effect of physically deviant previews shows overlap between EMs and Fixation Related Potentials (FRPs), where it impacts the P300. In contrast, Unrelated stimuli impact EMs incrementally as fixations grow longer, but they do not impact the FRP until later, on the N400 component.