RTs (a) and error rates (b).

<p>RTs (ms; a) and error rates (% incorrect responses; b) for the different stimulus categories (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0039802#pone-0039802-t001" target="_blank">Table 1</a> for explanation of abbreviations). Top panel depicts trial level congruency effects, the middle panel depicts sequential trial effects for the different congruency conditions and in the lower panel results of the different feature repetition conditions are shown. Percentage errors are expressed relative to the number of trials within the specific stimulus category.