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Neural correlates of training-related memory improvement in adulthood and aging

By Lars Nyberg, Johan Sandblom, Sari Jones, Anna Stigsdotter Neely, Karl Magnus Petersson, Martin Ingvar and Lars Bäckman

Abstract

Cognitive studies show that both younger and older adults can increase their memory performance after training in using a visuospatial mnemonic, although age-related memory deficits tend to be magnified rather than reduced after training. Little is known about the changes in functional brain activity that accompany training-induced memory enhancement, and whether age-related activity changes are associated with the size of training-related gains. Here, we demonstrate that younger adults show increased activity during memory encoding in occipito-parietal and frontal brain regions after learning the mnemonic. Older adults did not show increased frontal activity, and only those elderly persons who benefited from the mnemonic showed increased occipito-parietal activity. These findings suggest that age-related differences in cognitive reserve capacity may reflect both a frontal processing deficiency and a posterior production deficiency

Topics: Biological Sciences
Publisher: National Academy of Sciences
Year: 2003
DOI identifier: 10.1073/pnas.1735487100
OAI identifier: oai:pubmedcentral.nih.gov:263881
Provided by: PubMed Central
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