Volume 5, Number 8, Abstract 634, Page 634a doi:10.1167/5.8.634 http://journalofvision.org/5/8/634/ ISSN 1534-7362
Evidence for maturation of the fusiform face area (FFA) in 7 to 16 year old children
Golijeh Golarai
Psychology Department, Stanford University, Stanford, CA 94305
[e-mail]
Dara G. Ghahremani
Psychology Department, Stanford University, Stanford, CA 94305
Kalanit Grill-Spector
Psychology Department, Stanford University, Stanford, CA 94305
John D. E. Gabrieli
Psychology Department, Stanford University, Stanford, CA 94305
Abstract

Behavioral and electrophysiological studies in humans suggest that face processing begins in early development and undergoes a slow maturation during childhood. Little is known about the underlying neural systems or the role of experience in this maturation process. In adults, a specialized region in the FFA responds preferentially to faces compared to other objects. Some studies have suggested a role for “expertise” in FFA's responsiveness to faces. Thus, one possibility is that less face recognition expertise in children (compared to adults) is associated with less face selectivity in children's fusiform gyrus. Here we used functional magnetic resonance imaging (fMRI) to examine FFA's maturation during childhood. Fifteen adults and 21 children (ages 7 – 16) underwent fMRI in a 3 T scanner, while viewing 10 epochs of each of 5 image categories presented in pseudo-random blocks. Image categories included: faces (male faces with neutral facial expressions), novel objects (abstract sculptures), places (indoor and outdoor scenes) and textures. Data were analyzed in SPM2. For each subject, regions of interest were defined as contiguous voxels in the fusiform gyrus that were selectively activated for faces or objects. We found fewer face selective voxels (faces > abstract objects, p textures, p < 0.001) were similar in children and adults (right fusiform gyrus in children: 45.5± 16.6 voxels, in adults: 28.3 ± 9.8 voxels, p < 0.46; left FFA in children: 37.3 ± 13.1, in adults: 34.3 ± 10.1 voxels, p < 0.85). These findings provide evidence for maturation of FFA during childhood perhaps due to accumulated exposure to human faces.
Supported by 1R21MH66747 & 5R21DA15893

History
Received September 15, 2005; published September 23, 2005
Citation
Golarai, G., Ghahremani, D. G., Grill-Spector, K., & Gabrieli, J. D. E. (2005). Evidence for maturation of the fusiform face area (FFA) in 7 to 16 year old children [Abstract]. Journal of Vision, 5(8):634, 634a, http://journalofvision.org/5/8/634/, doi:10.1167/5.8.634.
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