Biomedical subjects
Publications and source records attributed to G Lafleche.
This article reviews the recent neuroimaging studies of patients with Alzheimer's disease. The neuroimaging procedures discussed include computerized tomography, magnetic resonance imaging, positron emission tomography, and single-photon emission computerized tomography.
Three tests of abstraction were administered to 89 optimally healthy subjects aged 30-79. Performance on all 3 tasks showed significant differences with age. This was primarily, although not entirely, the result of deficits in performance by the 70-year-old subjects. These results do not appear to be related to changes in memory ability or to a differential increase in a particular type of abstraction error.