Fig. 1.
An example of voxel selectivity profiles in the context of a study of visual category selectivity. The block design experiment included several categories of visual stimuli such as faces, bodies, scenes, and objects, defined as different experimental conditions. (A) Vectors of estimated regression coefficients β̂ = [βFaces, βBodies, βScenes]t for the voxels detected as selective to bodies, faces, and scenes in one subject. As is common in the field, the conventional method detects these voxels by performing significance tests comparing voxel's response to the category of interest and its response to objects. (B) The corresponding selectivity profiles y formed for the same group of voxels.