pt. 1. Dementia : general aspects -- pt. 2. Mild cognitive impairment -- pt. 3. Alzheimer's disease -- pt. 4. The overlap and interaction between Alzheimer's disease and cerebrovascular disease -- pt. 5. Cerebrovascular disease and cognitive impairment -- pt. 6. Dementia with lewy bodies and Parkinson's disease -- pt. 7. Focal dementias and related issues -- pt. 8. Other dementias and neuropsychiatric disorders associated with cognitive impairments.