Differentiating normal from pathological brain ageing using standard neuropsychological tests

Sarah J Wakefield, William J McGeown, Michael F Shanks, Annalena Venneri

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12 Citations (Scopus)
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Abstract

To diagnose Alzheimer's disease (AD) early, tests sensitive to neuropathology and insensitive to normal ageing are of greatest benefit. We used several neuropsychological tests to identify those best suited to distinguishing Mild Cognitive Impairment (MCI) and early AD from normal ageing. Impairments in long-term memory were found in older adults and these were even greater in MCI and AD. Older adults outperformed young controls on category fluency and produced later acquired and less familiar words. Older adults also outperformed both patient groups on this task producing more words which were significantly later acquired, less familiar and less typical. Decline in long-term memory appears nonspecific and in the early stage of AD cannot help the differentiation between normal and pathological brain ageing. Normal ageing has no negative effects on verbal fluency, and impairment on this task signals not only established AD, but also its prodromal MCI stage.

Original languageEnglish
Pages (from-to)765-772
Number of pages8
JournalCurrent Alzheimer Research
Volume11
Issue number8
Publication statusPublished - 1 Oct 2014

Keywords

  • brain ageing
  • alzheimer's disease
  • episodic memory
  • mild cognitive impairment
  • semantic memory
  • verbal fluency

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