Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/92569
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Chinese and Bilingual Studies | - |
dc.contributor | Research Institute for Smart Aging | - |
dc.creator | Ma, MKH | - |
dc.creator | Fong, MCM | - |
dc.creator | Xie, C | - |
dc.creator | Lee, T | - |
dc.creator | Chen, G | - |
dc.creator | Wang, W S | - |
dc.date.accessioned | 2022-04-26T06:45:35Z | - |
dc.date.available | 2022-04-26T06:45:35Z | - |
dc.identifier.issn | 1053-8119 | - |
dc.identifier.uri | http://hdl.handle.net/10397/92569 | - |
dc.language.iso | en | en_US |
dc.publisher | Academic Press | en_US |
dc.rights | © 2021 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). | en_US |
dc.rights | The following publication Ma, M. K.-H., Fong, M. C.-M., Xie, C., Lee, T., Chen, G., & Wang, W. S. (2021). Regularity and randomness in ageing: Differences in resting-state EEG complexity measured by largest Lyapunov exponent. Neuroimage: Reports, 1(4), 100054 is available at https://dx.doi.org/10.1016/j.ynirp.2021.100054. | en_US |
dc.subject | Complexity | en_US |
dc.subject | Ageing | en_US |
dc.subject | EEG | en_US |
dc.subject | Largest lyapunov exponent | en_US |
dc.subject | Resting state | en_US |
dc.title | Regularity and randomness in ageing : differences in resting-state EEG complexity measured by largest Lyapunov exponent | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 1 | - |
dc.identifier.issue | 4 | - |
dc.identifier.doi | 10.1016/j.ynirp.2021.100054 | - |
dcterms.abstract | The loss of complexity in ageing hypothesis (LOCH) has found support from EEG studies, most of which adopted signal-domain complexity measures. The present study adopted the largest Lyapunov exponent (LLE) to measure complexity from a nonlinear dynamical systems perspective. A total of 144 participants were included and divided into young, young-old and old-old groups. Both sensor-space and source-space results showed significantly lower LLE for older than younger adults. The age-related differences were region-dependent, being most prominent in the frontal region, followed by bilateral temporal regions. The occipital region showed non-significant differences. Significant reduction of LLE in the posterior cingulate was also observed by virtue of the source-space analysis. We also evaluated the relationships between LLE and other complexity measures. The most intriguing result was the negative correlation between LLE and Lempel-Ziv complexity (LZC). The age-related decrease in LLE indicated a higher regularity in dynamics, while the higher LZC indicated a higher randomness in the signal domain. The new findings support the LOCH by demonstrating the simultaneous increase in regularity and randomness. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | NeuroImage, Dec. 2021, v. 1, no. 4, 100054 | - |
dcterms.isPartOf | NeuroImage | - |
dcterms.issued | 2021-12 | - |
dc.identifier.eissn | 1095-9572 | - |
dc.identifier.artn | 100054 | - |
dc.description.validate | 202204 bcrc | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | a1269 | en_US |
dc.identifier.SubFormID | 44415 | en_US |
dc.description.fundingSource | RGC | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1-s2.0-S2666956021000520-main.pdf | 5.27 MB | Adobe PDF | View/Open |
Page views
54
Last Week
0
0
Last month
Citations as of May 19, 2024
Downloads
33
Citations as of May 19, 2024
SCOPUSTM
Citations
5
Citations as of May 17, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.