N4(00) is a negative component of the event related potential (ERP), occurring predominantly over the centroparietal scalp region and approximately 300 to 650 ms after the presentation of a word that is incongruent with its semantic context (Kutas and Hillyard, 1980; Bentin, 1989; Bentin et al., 1993; Hamberger et al., 1995; Gunter and Friederici, 1999; Nixon et al., 2002). In the classic experiment of Kutas and Hillyard (1980), N4 was elicited by the final anomalous word in sentences presented one word at a time (Kutas and Van Petten, 1988; Nixon et al., 2002). Though it is observed predominantly to semantic violations, a recent body of work has shown that N4 varies systematically with the processing of potentially meaningful stimuli at the level of meaning, where the amplitude is reduced by a variety of factors that increase these items predictability in their context (Kutas and Federmeier, 2000). Some of these factors are semantic congruity, antonyms, high frequency words and repetitions. Studies have shown that N4 reflects contextual integration (Brown and Hagoort, 1993). This view emphasizes the importance of the fit between
