Objective: To compare cognitive impairments in Dementia with Lewy bodies (DLB) and Parkinson’s disease dementia (PDD), in order to discriminate the two entities.
Methods: 10 DLB and 12 PDD consecutive patients performed a neuropsychological battery designed to assess several cognitive domains: verbal and visual memory (DMS-48), language, gnosia, praxia, and executive functions.
Results: DLB patients have poorer performances in orientation (p<0.05), Trail Making Test A (p<0.05), and reading of names of colours in the Stroop test (p<0.05). Their scores were also lower in visual object recognition memory test (DMS-48), both in immediate (p<0.05) and delayed recognition (p<0.05). No differences were observed in the other tests.
Conclusion: Despite global similarities in cognitive performances between DLB and PDD patients, we observed important differences : in particular, DMS-48, a test of visual object recognition memory and visual storage capacity, is poorer in DLB patients.
- lewy bodies dementia
- parkinsons disease dementia
- visual object recognition memory