{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T06:03:41Z","timestamp":1789625021204,"version":"build-2803163510"},"reference-count":36,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T00:00:00Z","timestamp":1789603200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002338","name":"Ministry of Education of China","doi-asserted-by":"publisher","award":["SJSCXZX2025005"],"award-info":[{"award-number":["SJSCXZX2025005"]}],"id":[{"id":"10.13039\/501100002338","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002338","name":"Ministry of Education of China","doi-asserted-by":"publisher","award":["24KJCX065"],"award-info":[{"award-number":["24KJCX065"]}],"id":[{"id":"10.13039\/501100002338","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002338","name":"Ministry of Education of China","doi-asserted-by":"publisher","award":["25YJA890037"],"award-info":[{"award-number":["25YJA890037"]}],"id":[{"id":"10.13039\/501100002338","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Neurosci."],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>This study aimed to quantify prefrontal cortex (PFC) activation and postural control complexity in older adults with mild cognitive impairment (MCI) during single-task standing and dual-task standing balance conditions and to investigate the associations between these measures.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This secondary analysis included 21 older adults with MCI (71.19\u202f\u00b1\u202f3.36\u202fyears) and 19 cognitively intact controls (70.16\u202f\u00b1\u202f4.54\u202fyears) from a previously reported cohort. Outcomes included cognitive performance, sample entropy of COP displacement (SampEn-COP), PFC activation across four bilateral functional regions, and exploratory correlations between PFC activation and SampEn-COP.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A significant group effect was observed for SampEn-COPml, with lower values in the MCI group than in the control group (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.002, \u03b7\n                      <jats:sup>2<\/jats:sup>\n                      <jats:sub>p<\/jats:sub>\n                      \u202f=\u202f0.217, q\u202f=\u202f0.007). SampEn-COPap was significantly higher under the dual-task condition than under the single-task condition (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.005, \u03b7\n                      <jats:sup>2<\/jats:sup>\n                      <jats:sub>p<\/jats:sub>\n                      \u202f=\u202f0.187, q\u202f=\u202f0.016). Group \u00d7 Task interactions were observed at the uncorrected level in the dorsolateral prefrontal cortex (DLPFC;\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.041, \u03b7\n                      <jats:sup>2<\/jats:sup>\n                      <jats:sub>p<\/jats:sub>\n                      \u202f=\u202f0.106, q\u202f=\u202f0.073) and orbitofrontal cortex (OFC;\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.039, \u03b7\n                      <jats:sup>2<\/jats:sup>\n                      <jats:sub>p<\/jats:sub>\n                      \u202f=\u202f0.107, q\u202f=\u202f0.073). The MCI group also showed lower cognitive accuracy and response rates than the control group across task conditions (both q\u202f&amp;lt;\u202f0.01). An exploratory negative correlation between OFC activation and SampEn-COPap was observed in the MCI group under the single-task condition (\n                      <jats:italic>r<\/jats:italic>\n                      \u202f=\u202f\u22120.469,\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.032, q\u202f=\u202f0.256).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Older adults with MCI showed a less complex medial\u2013lateral postural control pattern than cognitively intact older adults. During dual-task standing, changes in postural complexity were accompanied by preliminary evidence of task-related increases in DLPFC and OFC activation in the MCI group, suggesting greater prefrontal involvement in managing concurrent cognitive and postural demands.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fnins.2026.1885763","type":"journal-article","created":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T05:31:38Z","timestamp":1789623098000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Dual-task standing in older adults with mild cognitive impairment: postural control complexity, prefrontal activation, and cognitive task performance"],"prefix":"10.3389","volume":"20","author":[{"given":"Xinru","family":"Li","sequence":"first","affiliation":[{"name":"Graduate School of Education, Shandong Sport University","place":["Jinan, Shandong, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mian","family":"Zhou","sequence":"additional","affiliation":[{"name":"Rehabilitation Medicine Department, Weishan People\u2019s Hospital","place":["Jining, Shandong, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yvxi","family":"Zhang","sequence":"additional","affiliation":[{"name":"Graduate School of Education, Shandong Sport University","place":["Jinan, Shandong, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guocai","family":"Xu","sequence":"additional","affiliation":[{"name":"Shenyang Sport University","place":["Shenyang, Liaoning, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Min","family":"Mao","sequence":"additional","affiliation":[{"name":"Department of Sport and Recreation, Technological and Higher Education Institute of Hong Kong","place":["Hong Kong, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dewei","family":"Mao","sequence":"additional","affiliation":[{"name":"Division of Physical Education, The Chinese University of Hong Kong","place":["Shenzhen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiangna","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Sports and Health, Shandong Sport University","place":["Jinan, Shandong, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Sun","sequence":"additional","affiliation":[{"name":"College of Sports and Health, Shandong Sport University","place":["Jinan, Shandong, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,9,17]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"86","DOI":"10.1186\/s12984-023-01211-x","article-title":"Change in activity patterns in the prefrontal cortex in different phases during the dual-task walking in older adults","volume":"20","author":"Baek","year":"2023","journal-title":"J. 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