Fig. 1.

A, Example stimuli used in Experiments 1 and 2, varying in Category (Buildings, Objects) and Condition (Concave, Convex). B, Experimental procedure for Experiment 1. After a brief presentation of an image, participants were asked to indicate whether the image they just saw was a “place” or an “object”. C, Participants’ proportion of place ratings for all the stimuli conditions. There is a significantly greater proportion of place ratings for Concave Objects over Convex Objects, but not for Concave Buildings over Convex Buildings. D, Average percent signal change in each region of interest to the four conditions of interest. PPA and OPA responded significantly more to Concave Objects than Convex Objects, whereas LOC responded significantly more to Convex over Concave Buildings and Objects, respectively. The response patterns in PPA and OPA are qualitatively different from those in LOC and V1. We found no significant difference between RSC response to Concave versus Convex Buildings and Objects, respectively. Error bars represent the standard error of the mean.