A steady state visually evoked potential investigation of memory and ageing

Macpherson, Helen, Pipingas, Andrew and Silberstein, Richard 2009, A steady state visually evoked potential investigation of memory and ageing, Brain and cognition, vol. 69, no. 3, pp. 571-579, doi: 10.1016/j.bandc.2008.12.003.

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Title A steady state visually evoked potential investigation of memory and ageing
Author(s) Macpherson, HelenORCID iD for Macpherson, Helen orcid.org/0000-0002-3603-9359
Pipingas, Andrew
Silberstein, Richard
Journal name Brain and cognition
Volume number 69
Issue number 3
Start page 571
End page 579
Total pages 9
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2009-04
ISSN 1090-2147
Keyword(s) ageing
contextual recognition
episodic memory
SSVEP
working memory
Summary Old age is generally accompanied by a decline in memory performance. Specifically, neuroimaging and electrophysiological studies have revealed that there are age-related changes in the neural correlates of episodic and working memory. This study investigated age-associated changes in the steady state visually evoked potential (SSVEP) amplitude and latency associated with memory performance. Participants were 15 older (59-67 years) and 14 younger (20-30 years) adults who performed an object working memory (OWM) task and a contextual recognition memory (CRM) task, whilst the SSVEP was recorded from 64 electrode sites. Retention of a single object in the low demand OWM task was characterised by smaller frontal SSVEP amplitude and latency differences in older adults than in younger adults, indicative of an age-associated reduction in neural processes. Recognition of visual images in the more difficult CRM task was accompanied by larger, more sustained SSVEP amplitude and latency decreases over temporal parietal regions in older adults. In contrast, the more transient, frontally mediated pattern of activity demonstrated by younger adults suggests that younger and older adults utilize different neural resources to perform recognition judgements. The results provide support for compensatory processes in the aging brain; at lower task demands, older adults demonstrate reduced neural activity, whereas at greater task demands neural activity is increased.
Language eng
DOI 10.1016/j.bandc.2008.12.003
Field of Research 170299 Cognitive Sciences not elsewhere classified
1109 Neurosciences
1701 Psychology
Socio Economic Objective 920502 Health Related to Ageing
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2009, Crown Copyright
Persistent URL http://hdl.handle.net/10536/DRO/DU:30073137

Document type: Journal Article
Collections: Faculty of Health
School of Exercise and Nutrition Sciences
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