Abstract
The new Mild Cognitive Impairment criteria have emphasized impairment of episodic memory characteristic of amnesic syndrome of hippocampal type. The concept of “MCI due to Alzheimer's Disease” has been used to identify those symptomatic but nondemented individuals whose primary underlying pathophysiology is AD. The objective of the study was to review episodic memory performance and frequency of abnormality in a sample of elderly subjects previously classified as cognitively intact. 218 community elderly subjects were selected between 2008 and 2010 for a study of normal aging. Subjects had no significant clinical condition and showed normal cognitive performance considering the inclusion criteria (normal scores in 90% of the applied tests including the Mini Mental + normal functional status + no cognitive complaint). All participants were briefly tested for hearing and vision with quick screenings. Episodic memory was assessed by the free recall of the word list test. Frequency of episodic memory abnormality assessed by a verbal task was relatively high in this sample. Independent on absence of cognitive complaint, it is important to consider episodic memory for those with impaired performance.
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