Question Scaling Image Similarity fMRI adaptation Result in ROIs Conclusions

A distributed human neural system for face perception was proposed by Haxby et al. (2000), in which the core system is comprised of separate neural modules representing variable and invariable properties of faces. Changes in identity, viewpoint and expression all involve changes in the image. Is the change of activity in FFA, specially the release from adaptation, a result of a change in these face properties, per se, or could it be an effect that would arise from any physical change to the face image? The similarity of face pairs were scaled by the Gabor-jet model, a model that performs multiscale, multiorientation filtering analogous to V1 simple cell activity (Lades et al., 1993). Similarity of a pair of faces was computed by correlating activation values of corresponding kernels within corresponding jets in a 10 b