Skip to main content

Neuropsychological features of early Alzheimer's disease: preclinical and clinical stages

Buy Article:

$43.00 plus tax (Refund Policy)

In the preclinical stage of Alzheimer's disease (AD), studies of asymptomatic mutation carriers have identified impairments in episodic memory. Other cognitive functions show no or slight impairment suggesting that preclinical AD is a unifunctional cognitive syndrome; the brain is affected selectively and predominantly in the medial temporal structures. In the early clinical stage, deficits occur in episodic memory, verbal abilities, visuospatial functions, attention, and executive functions. AD becomes a multifunctional cognitive syndrome and the brain's association cortices are affected. Nevertheless, sensory‐motor performance and procedural memory seem to be intact and only slight impairment may be seen in primary memory. In advanced AD, cognitive dysfunction including deficits is global in primary memory, although sensory‐motor performance may be well preserved. The brain's association cortices are severely affected. The sequence of cognitive decline, from unifunctional to global deficits, conforms to the three‐stage development of neurofibrillary tangles described by Braak and Braak.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Original Article

Affiliations: Department of Clinical Neuroscience and Family Medicine, Karolinska Institute, Huddinge, Sweden

Publication date: 01 April 1996

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more