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. Author manuscript; available in PMC: 2010 Nov 1.
Published in final edited form as: J Mem Lang. 2009 Nov;61(4):538–555. doi: 10.1016/j.jml.2009.08.003

Figure 3.

Figure 3

Grand average ERPs to ambiguous words (dashed lines) and unambiguous words (solid lines) in syntactic prose sentences (thinner lines) and congruent sentences (thicker lines) are overlaid at 4 representative central/posterior electrode sites to highlight the influence of semantic constraints on the N400. N400 amplitudes to both ambiguous and unambiguous words are highly facilitated (made more positive) in the presence of semantic constraints, although this facilitation is greater for unambiguous than ambiguous targets in cloze-probability matched sentence contexts.