The grand-averaged ERPs elicited by upright and inverted faces under same and alternating orientation conditions.

<p>Data from the occipito-temporal (PO7/PO8) and temporal (P7/P8) sites are shown. The ERPs under same and alternating orientation conditions are denoted by blue and red lines, respectively. The ERPs for upright and inverted faces are denoted by dashed and solid lines, respectively. Note that the ERPs under the same orientation condition are the same as the ERPs under the short ISI conditions in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0041103#pone-0041103-g002" target="_blank">Figure 2</a>.