Activity produced in the fusiform gyrus (V4 complex) in the contrast colour grouping > no grouping. Slice at 45, − 49, and − 11. Threshold p < 0.001 uncorrected. The coordinates of the posterior activation correspond to V4 (this study: (45, − 67, − 14); Bartels and Zeki, 2000: (28, − 51, − 22)) and those of the anterior one to those of V4α (this study: (42, − 46, − 11); Bartels and Zeki, 2000: (34, –75, − 21)).