Preserved memory-based orienting of attention with impaired explicit memory in healthy ageing.
It is increasingly recognised that spatial contextual long-term memory (LTM) prepares neural activity for guiding visuo-spatial attention in a proactive manner. In the current study, we investigated whether the decline in explicit memory observed in healthy ageing would compromise this mechanism. We...
| Publicado en: | Cortex: A Journal Devoted to the Study of the Nervous System & Behavior Vol. 74; pp. 67 - 79 |
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| Autores principales: | , , |
| Formato: | research Journal Article |
| Publicado: |
Masson SPA
Jan 2016
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=113039708&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 113039708 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00109452 GMP jtl: Cortex: A Journal Devoted to the Study of the Nervous System & Behavior issn: 00109452 maglogo: N pubinfo: dt: Jan 2016 vid: 74 pid: 12473 pub: Masson SPA artinfo: ui: 113039708 113039708 NLM26649914 113039708 10.1016/j.cortex.2015.10.019 NLM26649914 PMC4729287 113039708 ppf: 67 ppct: 12 formats: tig: atl: Preserved memory-based orienting of attention with impaired explicit memory in healthy ageing. aug: au: Salvato, Gerardo Patai, Eva Z Nobre, Anna C affil: Oxford Centre for Human Brain Activity, University of Oxford, Oxford, United Kingdom; Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom; Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy; NeuroMi, Milan Centre for Neuroscience, Italy sug: subj: Memory Orientation Aging Physiology Visual Perception Physiology Attention Human Aging Psychosocial Factors Neuropsychological Tests Female Middle Age Aged Male Adult Aged, 80 and Over Young Adult Validation Studies Comparative Studies Evaluation Research Multicenter Studies Funding Source Middle Aged: 45-64 years Aged: 65+ years Adult: 19-44 years Aged, 80 & over Female Male ab: It is increasingly recognised that spatial contextual long-term memory (LTM) prepares neural activity for guiding visuo-spatial attention in a proactive manner. In the current study, we investigated whether the decline in explicit memory observed in healthy ageing would compromise this mechanism. We compared the behavioural performance of younger and older participants on learning new contextual memories, on orienting visual attention based on these learnt contextual associations, and on explicit recall of contextual memories. We found a striking dissociation between older versus younger participants in the relationship between the ability to retrieve contextual memories versus the ability to use these to guide attention to enhance performance on a target-detection task. Older participants showed significant deficits in the explicit retrieval task, but their behavioural benefits from memory-based orienting of attention were equivalent to those in young participants. Furthermore, memory-based orienting correlated significantly with explicit contextual LTM in younger adults but not in older adults. These results suggest that explicit memory deficits in ageing might not compromise initial perception and encoding of events. Importantly, the results also shed light on the mechanisms of memory-guided attention, suggesting that explicit contextual memories are not necessary. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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