Figure 7.

(A) Target discrimination accuracy and (B) sensitivity for face stimuli. No clear evidence for surround suppression was observed in both measures. (C) Participants tended to respond “same” more often as inter-target distance increased. (D) The identity of target faces affected target discrimination accuracy in different ways. Discrimination accuracy was greater when different faces were presented as the target stimuli (red lines), whereas it suffered when the target stimuli were the same face (black lines). Only same target faces produced attentional surround suppression. Error bars indicate SEM.