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. 2011 Mar 22;6(3):e17920. doi: 10.1371/journal.pone.0017920

Figure 3. The grammaticality effect.

Figure 3

Top: Grand average event-related potentials of 4-month-old infants (n = 34) for the processing of the verb averaged across the four test phases. The processing of the incorrect condition (red line) is plotted against the processing of the correct condition (blue line). The solid vertical line indicates the onset of the verb, the broken vertical line at the scale plot indicates the onset of the suffix. Negative is plotted upwards. Bottom: Isovoltage map showing the scalp distribution of the effect. Positive difference is colour-coded in red.