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Fast Periodic Visual Stimulation indexes preserved semantic memory in healthy ageing

Behavioural studies investigating the preservation of semantic memory in healthy ageing have reported mixed findings. One suggested reason for this discrepancy is that the processes underpinning lexical access to semantic knowledge may be sensitive to ageing. It is therefore necessary to assess sema...

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Autores principales: Milton, Alex, Rowland, Alesi, Stothart, George, Clatworthy, Phil, Pennington, Catherine M., Kazanina, Nina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7403314/
https://www.ncbi.nlm.nih.gov/pubmed/32753662
http://dx.doi.org/10.1038/s41598-020-69929-5
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author Milton, Alex
Rowland, Alesi
Stothart, George
Clatworthy, Phil
Pennington, Catherine M.
Kazanina, Nina
author_facet Milton, Alex
Rowland, Alesi
Stothart, George
Clatworthy, Phil
Pennington, Catherine M.
Kazanina, Nina
author_sort Milton, Alex
collection PubMed
description Behavioural studies investigating the preservation of semantic memory in healthy ageing have reported mixed findings. One suggested reason for this discrepancy is that the processes underpinning lexical access to semantic knowledge may be sensitive to ageing. It is therefore necessary to assess semantic memory utilising tasks that are not explicitly linguistic. In this study, a fast periodic visual stimulation (FPVS) paradigm coupled with EEG was used to assess the ability of younger and older adults to automatically distinguish between images by their semantic category. Participants were presented with a 6 Hz stream of images drawn from one semantic category except every fifth image (occurring at a rate of 1.2 Hz) which was drawn from an alternate semantic category. For both younger and older adults, results demonstrate successful and comparable semantic categorisation. This was detectable at the individual level for 71% and 72% of older and younger adults, respectively. Given the rapid presentation rate and absence of explicit instruction to categorise images, the task is unlikely to utilise linguistic strategies and suggests the maintenance of semantic memory in healthy ageing. Moreover, this study utilised mobile EEG equipment and short presentation times that would be suitable for practical application outside a research setting.
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spelling pubmed-74033142020-08-07 Fast Periodic Visual Stimulation indexes preserved semantic memory in healthy ageing Milton, Alex Rowland, Alesi Stothart, George Clatworthy, Phil Pennington, Catherine M. Kazanina, Nina Sci Rep Article Behavioural studies investigating the preservation of semantic memory in healthy ageing have reported mixed findings. One suggested reason for this discrepancy is that the processes underpinning lexical access to semantic knowledge may be sensitive to ageing. It is therefore necessary to assess semantic memory utilising tasks that are not explicitly linguistic. In this study, a fast periodic visual stimulation (FPVS) paradigm coupled with EEG was used to assess the ability of younger and older adults to automatically distinguish between images by their semantic category. Participants were presented with a 6 Hz stream of images drawn from one semantic category except every fifth image (occurring at a rate of 1.2 Hz) which was drawn from an alternate semantic category. For both younger and older adults, results demonstrate successful and comparable semantic categorisation. This was detectable at the individual level for 71% and 72% of older and younger adults, respectively. Given the rapid presentation rate and absence of explicit instruction to categorise images, the task is unlikely to utilise linguistic strategies and suggests the maintenance of semantic memory in healthy ageing. Moreover, this study utilised mobile EEG equipment and short presentation times that would be suitable for practical application outside a research setting. Nature Publishing Group UK 2020-08-04 /pmc/articles/PMC7403314/ /pubmed/32753662 http://dx.doi.org/10.1038/s41598-020-69929-5 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Milton, Alex
Rowland, Alesi
Stothart, George
Clatworthy, Phil
Pennington, Catherine M.
Kazanina, Nina
Fast Periodic Visual Stimulation indexes preserved semantic memory in healthy ageing
title Fast Periodic Visual Stimulation indexes preserved semantic memory in healthy ageing
title_full Fast Periodic Visual Stimulation indexes preserved semantic memory in healthy ageing
title_fullStr Fast Periodic Visual Stimulation indexes preserved semantic memory in healthy ageing
title_full_unstemmed Fast Periodic Visual Stimulation indexes preserved semantic memory in healthy ageing
title_short Fast Periodic Visual Stimulation indexes preserved semantic memory in healthy ageing
title_sort fast periodic visual stimulation indexes preserved semantic memory in healthy ageing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7403314/
https://www.ncbi.nlm.nih.gov/pubmed/32753662
http://dx.doi.org/10.1038/s41598-020-69929-5
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