The neural activation in fusiform face area for object perception in wide visual field

Abstract

The fusiform face area (FFA) is thought to be preferentially involved in the processing of faces, and its neural responses exhibit category biases to objects presented in the central visual field. Differences neural activities in FFA for objects categories aligning in the central and peripheral visual field were measured. We using a wide-view (about 120°) visual presentation system developed for vision research and functional magnetic resonance imaging (fMRI), the subject were presented with objects, which were presented at a range of viewpoints in 6 level of eccentricity degree. We investigated the BLOD response to stimuli in the FFA. The result suggests face had much bigger neural activation than other objects in the FFA areas and exhibited significant differences in the neural responses to object categories at eccentricity positions of 0° and 11°, but we not find this the neural response character in the peripheral visual field.