Katherine Cheung

Learn More
BACKGROUND The fragile X premutation provides a unique opportunity for the study of genetic and brain mechanisms of behavior and cognition in the context of neurodevelopment and neurodegeneration. Although the neurodegenerative phenotype, fragile X-associated tremor/ataxia syndrome, is well described, evidence of a causal link between the premutation and(More)
Previous functional MRI (fMRI) studies have shown that fragile X mental retardation 1 (FMR1) fragile X premutation allele carriers (FXPCs) exhibit decreased hippocampal activation during a recall task and lower inferior frontal activation during a working memory task compared to matched controls. The molecular characteristics of FXPCs includes 55-200 CGG(More)
The fragile X mental retardation 1 (FMR1) gene plays an important role in the development and maintenance of neuronal circuits that are essential for cognitive functioning. We explored the functional linkage(s) among lymphocytic FMR1 gene expression, brain structure, and working memory in healthy adult males. We acquired T1-weighted and diffusion tensor(More)
  • Summer School, Si, +10 authors Wehbe Sports Co-Ordinator
  • 2005
University semester and vacation dates 2005 These dates (and any updates) are also available at: Semester 1 units of study. Last day to add a unit Friday 18 March Last day for withdrawal Thursday 31 March Last day to discontinue without failure (DNF) Friday 29 April Last day to discontinue (Discontinued – Fail) Friday 10 June Semester 2 units of study. Last(More)
  • 1