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|Title:||Local but not long-range microstructural differences of the ventral temporal cortex in developmental prosopagnosia|
|Keywords:||Diffusion-weighted imaging;Inferior longitudinal fasciculus;Inferior fronto-occipital fasciculus;Prosopagnosia;Face perception;Individual differences|
|Citation:||Neuropsychologia, 78: pp. 195 - 206, (2015)|
|Abstract:||Individuals with developmental prosopagnosia (DP) experience face recognition impairments despite normal intellect and low-level vision and no history of brain damage. Prior studies using diffusion tensor imaging in small samples of subjects with DP (n=6 or n=8) offer conflicting views on the neurobiological bases for DP, with one suggesting white matter differences in two major long-range tracts running through the temporal cortex, and another suggesting white matter differences confined to fibers local to ventral temporal face-specific functional regions of interest (fROIs) in the fusiform gyrus. Here, we address these inconsistent findings using a comprehensive set of analyzes in a sample of DP subjects larger than both prior studies combined (n=16). While we found no microstructural differences in long-range tracts between DP and age-matched control participants, we found differences local to face-specific fROIs, and relationships between these microstructural measures with face recognition ability. We conclude that subtle differences in local rather than long-range tracts in the ventral temporal lobe are more likely associated with developmental prosopagnosia.|
|Appears in Collections:||Dept of Life Sciences Research Papers|
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