Domain-generality of Parietal Attentional Processes and their Implications for Old Age
The posterior parietal cortex (PPC) has been reliably implicated in visuospatial attention, such that the dorsal regions (dPPC) are associated with voluntary ‘top-down’ attention, whereas the ventral regions (vPPC) are associated with automatic ‘bottom-up’ attentional processes. The Attention-to-Mem...
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ndltd-LACETR-oai-collectionscanada.gc.ca-OTU.1807-426832013-12-06T03:37:54ZDomain-generality of Parietal Attentional Processes and their Implications for Old AgeBellana, Buddhikaposterior parietal cortexattentionmemorycognitive ageing0633The posterior parietal cortex (PPC) has been reliably implicated in visuospatial attention, such that the dorsal regions (dPPC) are associated with voluntary ‘top-down’ attention, whereas the ventral regions (vPPC) are associated with automatic ‘bottom-up’ attentional processes. The Attention-to-Memory model (AtoM: Ciaramelli, Grady, & Moscovitch, 2008) has suggested that it also plays a similar role in memory retrieval, suggesting that the PPC mediates a domain-general attentional process. Furthermore, domain-generality of attentional processes may account for differences in perception and memory function accompanying old age. This study examined domain-generality by determining the shared variance in performance of tasks thought to recruit top-down and bottom-up attentional processes mediated across both domains. Results clearly suggested generality across domains in top-down processing; and in bottom-up processing, depending on its operationalization. Ageing was characterized by an absence of shared variance across domains and slower reaction times during bottom-up attentional reorienting only in perception.Moscovitch, MorrisGrady, Cheryl L.2013-112013-11-21T15:25:17ZNO_RESTRICTION2013-11-21T15:25:17Z2013-11-21Thesishttp://hdl.handle.net/1807/42683en_ca |
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en_ca |
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posterior parietal cortex attention memory cognitive ageing 0633 |
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posterior parietal cortex attention memory cognitive ageing 0633 Bellana, Buddhika Domain-generality of Parietal Attentional Processes and their Implications for Old Age |
description |
The posterior parietal cortex (PPC) has been reliably implicated in visuospatial attention, such that the dorsal regions (dPPC) are associated with voluntary ‘top-down’ attention, whereas the ventral regions (vPPC) are associated with automatic ‘bottom-up’ attentional processes. The Attention-to-Memory model (AtoM: Ciaramelli, Grady, & Moscovitch, 2008) has suggested that it also plays a similar role in memory retrieval, suggesting that the PPC mediates a domain-general attentional process. Furthermore, domain-generality of attentional processes may account for differences in perception and memory function accompanying old age. This study examined domain-generality by determining the shared variance in performance of tasks thought to recruit top-down and bottom-up attentional processes mediated across both domains. Results clearly suggested generality across domains in top-down processing; and in bottom-up processing, depending on its operationalization. Ageing was characterized by an absence of shared variance across domains and slower reaction times during bottom-up attentional reorienting only in perception. |
author2 |
Moscovitch, Morris |
author_facet |
Moscovitch, Morris Bellana, Buddhika |
author |
Bellana, Buddhika |
author_sort |
Bellana, Buddhika |
title |
Domain-generality of Parietal Attentional Processes and their Implications for Old Age |
title_short |
Domain-generality of Parietal Attentional Processes and their Implications for Old Age |
title_full |
Domain-generality of Parietal Attentional Processes and their Implications for Old Age |
title_fullStr |
Domain-generality of Parietal Attentional Processes and their Implications for Old Age |
title_full_unstemmed |
Domain-generality of Parietal Attentional Processes and their Implications for Old Age |
title_sort |
domain-generality of parietal attentional processes and their implications for old age |
publishDate |
2013 |
url |
http://hdl.handle.net/1807/42683 |
work_keys_str_mv |
AT bellanabuddhika domaingeneralityofparietalattentionalprocessesandtheirimplicationsforoldage |
_version_ |
1716616383354109952 |