Leonard E Egede, Rebekah J Walker, Sebastian Linde, Joni S Williams
Identifying Individuals with Highest Social Risk in Adults with Type 2 Diabetes Using Item Response Theory
Journal of general internal medicine
studies braindamaged patients revealed existence selective impairment face processing prosopagnosia resulting lesions different loci occipital temporal lobes results studies led identification several cortical areas underlying processing faces remains unclear functional aspects face processing served areas whether uniquely devoted processing faces present study addresses questions positron emission tomography pet study regional cerebral blood flow normal adults using 15 oxygen water bolus technique subjects participated six tasks gratings faces objects resulting level cerebral activation mapped images subjects cerebral structures obtained magnetic resonance compared tasks using subtraction method compared fixation condition regional cerebral blood flow rcbf changes found striate extrastriate cortex subjects decide orientation sinewave gratings facegender categorization resulted activation changes right extrastriate cortex faceidentity condition produced additional activation fusiform gyrus anterior temporal cortex hemispheres right parahippocampal gyrus adjacent areas cerebral activation objectrecognition task occurred essentially left occipitotemporal cortex involve right hemisphere regions specifically activated faceidentity task results provide first empirical evidence normal subjects regarding crucial role ventromedial region right hemisphere face recognition offer new information dissociation face object processing