中国康复2024，Vol.1Issue(10)：579-583,5.DOI:10.3870/zgkf.2024.10.001
不同感觉策略下认知-平衡双任务的年龄相关性差异分析
Analysis of age-related differences in cognitive-balance dual-tasks with different sensory strategies
摘要
Abstract
Objective:To explore the balance performance and cortical activation characteristics in elderly and young individuals under different sensory strategies while performing cognitive-balance dual tasks.Methods:A total of 19 healthy young individuals and 20 healthy elderly individuals were recruited from the community.The partici-pants naturally stood on a dynamic and static balance apparatus,wearing functional near-infrared spectroscopy(fNIRS)caps to measure cortical activity.They completed three tasks.Task 1 involved standing on a stable surface with eyes closed while performing serial subtraction by sevens.Task 2 involved standing on an unstable surface with eyes open while performing serial subtraction by sevens.Task 3 involved standing on an unstable surface with eyes closed while performing serial subtraction by sevens.The bilateral sensorimotor cortex(SMC),premotor cortex(PMC),and prefrontal cortex(PFC)were set as regions of interest(ROIs).The overall stability index(OSI)was used to measure balance ability,and the cortical activation β value was used to measure the degree of cortical activa-tion.Results:In Task 1,the OSI of the elderly group was significantly higher than that of the young group(P＜0.05),indicating poorer balance performance.There was no significant difference in the β values between the young and elderly groups,suggesting similar levels of cortical activation.In Task 2,there was no significant difference in OSI between the young and elderly groups.However,the β values of the right sensorimotor cortex(rSMC),right premotor cortex(rPMC),and left prefrontal cortex(lPFC)in the elderly group were significantly higher than those in the young group(P＜0.05),indicating increased cortical activation in these areas for the elderly.In Task 3,the-re was no significant difference in OSI between the two groups,but the β values of the rSMC and rPMC in the elderly group were significantly higher than those in the young group(P＜0.01).Conclusion:The findings suggest that under dual-task conditions,the elderly rely more on visual input to maintain balance compared to the young.As the complexity of sensory strategies in-creases,the elderly show compensatory increases in cortical activation to enhance the central nervous system's pro-cessing ability for sensory strategy changes.However,due to brain aging and the decline in cortical function,the elderly reach the upper limit of cortical resource utilization more easily.关键词
老年人/感觉策略/双任务/皮质激活/功能性近红外光谱技术Key words
older adults/sensory strategy/dual-task/cortical activation/functional near-infrared spectroscopy分类
医药卫生引用本文复制引用
吉莹,郭川,朱仕哲,庄任,钱雪,王庆雷,耿阿燕,阚超杰..不同感觉策略下认知-平衡双任务的年龄相关性差异分析[J].中国康复,2024,1(10):579-583,5.基金项目
国家自然科学基金(82174489、82274630) （82174489、82274630）
江苏省中医院高峰人才项目(y2021rc50、y2021rc04) （y2021rc50、y2021rc04）
