Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/105417
DC Field | Value | Language |
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dc.contributor | Department of Rehabilitation Sciences | en_US |
dc.contributor | University Research Facility in Behavioral and Systems Neuroscience | en_US |
dc.creator | Yeung, MK | en_US |
dc.creator | Han, YMY | en_US |
dc.date.accessioned | 2024-04-12T06:52:19Z | - |
dc.date.available | 2024-04-12T06:52:19Z | - |
dc.identifier.uri | http://hdl.handle.net/10397/105417 | - |
dc.language.iso | en | en_US |
dc.publisher | Nature Publishing Group | en_US |
dc.rights | © The Author(s) 2023 | en_US |
dc.rights | 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. | en_US |
dc.rights | The following publication Yeung, M.K., Han, Y.M.Y. Changes in task performance and frontal cortex activation within and over sessions during the n-back task. Sci Rep 13, 3363 (2023) is available at https://doi.org/10.1038/s41598-023-30552-9. | en_US |
dc.title | Changes in task performance and frontal cortex activation within and over sessions during the n-back task | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 13 | en_US |
dc.identifier.doi | 10.1038/s41598-023-30552-9 | en_US |
dcterms.abstract | The n-back task is a popular paradigm for studying neurocognitive processing at varying working memory loads. Although much is known about the effects of load on behavior and neural activation during n-back performance, the temporal dynamics of such effects remain unclear. Here, we investigated the within- and between-session stability and consistency of task performance and frontal cortical activation during the n-back task using functional near-infrared spectroscopy (fNIRS). Forty healthy young adults performed the 1-back and 3-back conditions three times per condition. They then undertook identical retest sessions 3 weeks later (M = 21.2 days, SD = 0.9). Over the course of the task, activation in the participants’ frontopolar, dorsomedial, dorsolateral, ventrolateral, and posterolateral frontal cortices was measured with fNIRS. We found significantly improved working memory performance (difference between 1-back and 3-back accuracies) over time both within and between sessions. All accuracy and reaction time measures exhibited good to excellent consistency within and across sessions. Additionally, changes in frontal oxyhemoglobin (HbO) and deoxyhemoglobin (HbR) concentration were maintained over time across timescales, except that load-dependent (3-back > 1-back) HbO changes, particularly in the ventrolateral PFC, diminished over separate sessions. The consistency of fNIRS measures varied greatly, with changes in 3-back dorsolateral and ventrolateral HbO demonstrating fair-to-good consistency both within and between sessions. Overall, this study clarified the temporal dynamics of task performance and frontal activation during the n-back task. The findings revealed the neural mechanisms underlying the change in n-back task performance over time and have practical implications for future n-back research. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Scientific reports, 2023, v. 13, 3363 | en_US |
dcterms.isPartOf | Scientific reports | en_US |
dcterms.issued | 2023 | - |
dc.identifier.isi | WOS:000986236800056 | - |
dc.identifier.scopus | 2-s2.0-85148972473 | - |
dc.identifier.pmid | 36849731 | - |
dc.identifier.eissn | 2045-2322 | en_US |
dc.identifier.artn | 3363 | en_US |
dc.description.validate | 202403 bcvc | en_US |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_Scopus/WOS | - |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Hong Kong Polytechnic University | en_US |
dc.description.pubStatus | Published | en_US |
dc.description.oaCategory | CC | en_US |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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s41598-023-30552-9.pdf | 4.17 MB | Adobe PDF | View/Open |
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