Sunday, January 15, 2006

memory, sensory

Sensory memory is the mental faculty that enables a person to retain and recall sensory perceptions. The capacity of visual sensory memory can be determined by the number of letters correctly identified in a briefly presented visual field. Studies have been done to determine whether or not the capacity of the sensory memory decreases with age. In the studies conducted, a six-letter display was shown to the subjects. The mean age of the subjects was 21. The older adults identified fewer letters than did the younger adults. The elderly subjects performed much more poorly than the younger adults. These studies suggested that sensory memory decreases as a person grows older, although confirmation with studies of the same people over long periods of their lives is also needed.
Brocklehurst, J. C. Textbook of Geriatric Medicine and Gerontology. New York: Churchill Livingstone, 1985.


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