title: Functional brain imaging study of mathematical reasoning abilities in velocardiofacial syndrome (del22q11.2).
abstract: OBJECTIVE
  Children with velocardiofacial syndrome (VCFS) often have deficits in mathematical reasoning. Previous research has suggested that structural abnormalities in the parietal lobe region might underlie these deficits. The present study utilized functional magnetic resonance imaging (fMRI) to explore the relationship between brain function and mathematical performance in VCFS.
  
  
  METHODS
  Eight children with VCFS and eight comparison subjects underwent fMRI scanning and completed an arithmetic computation task.
  
  
  RESULTS
  In the VCFS group, increased activation was observed in the left supramarginal gyrus (LSMG) as the task difficulty increased.
  
  
  CONCLUSIONS
  Aberrant LSMG activation, possibly due to structural deficits of the left parietal lobe, may explain decrements in arithmetic performance observed in VCFS.
authors.affiliation: Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, California 94305-5719, USA.
authors.forename: S
authors.initials: S
authors.lastname: Eliez
authors.forename: C M
authors.initials: CM
authors.lastname: Blasey
authors.forename: V
authors.initials: V
authors.lastname: Menon
authors.forename: C D
authors.initials: CD
authors.lastname: White
authors.forename: J E
authors.initials: JE
authors.lastname: Schmitt
authors.forename: A L
authors.initials: AL
authors.lastname: Reiss
mesh_terms: D000293:Adolescent; D000328:Adult; D001921:Brain / Q000473:pathology*; D002648:Child; D002872:Chromosome Deletion; D002892:Chromosomes, Human, Pair 22; D003071:Cognition; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D017404:In Situ Hybridization, Fluorescence; D008279:Magnetic Resonance Imaging; D008297:Male; D008433:Mathematics; D008606:Mental Processes / Q000502:physiology*