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J Clin Exp Neuropsychol · Jul 2010
Comparative StudyTemporal order memory differences in Alzheimer's disease and vascular dementia.
- Benjamin M Hampstead, David J Libon, Stephen T Moelter, Thomas Swirsky-Sacchetti, Ludo Scheffer, Steven M Platek, and Douglas Chute.
- VA RR&D Center of Excellence, Atlanta VA Medical Center, Decatur, GA 30033, USA. bhampst@emory.edu
- J Clin Exp Neuropsychol. 2010 Jul 1; 32 (6): 645-54.
AbstractDetermining the order of events is essential for accurate memory recollection: an ability previously linked to both frontal and medial temporal functioning. Frontal-subcortical and medial temporal dysfunction typify vascular dementia (VaD) and Alzheimer's disease (AD), respectively. Therefore, we assessed patients' ordering abilities using a novel sequencing task that progressively increased memory load. VaD patients made more errors and selected more previously encountered stimuli than did AD. Curve analysis revealed a general decline in ordering for VaD whereas error production in AD is more dependent on memory load. These findings generally support the role of frontal-subcortical functioning in temporal order memory.
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