以事件关联电位评价身体活动量对老年人执行控制功能的影响  

Influence of physical activity on executive control function in older adults by event-related potentials

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作  者:黎晋添[1] Li Jintian(College of Physical Education,Shaoguan University,Shaoguan 512026.Guangdong Province,China)

机构地区:[1]韶关学院体育学院,广东省韶关市512026

出  处:《中国组织工程研究》2019年第11期1693-1699,共7页Journal of Clinical Rehabilitative Tissue Engineering Research

基  金:广东省社科基金项目(GD17CTY02)

摘  要:背景:身体活动有助于提升老年人认知功能,但其机制并不十分清楚。目的:探讨身体活动对于老年人认知功能提升的中所产生的大脑补偿机制。方法:自愿参与受试者45人,分为3组:中低活动量老人组15人;高身体活动量老人组15人;年轻人组15人。运用Stroop两种难度作业在相容及不相容情境下作为测试工具,采用脑波测量(14个电极位置:Fz,F3,F4,Cz,C3,C4,Pz,P3,P4,T3,T4,Oz,O1,O2)并据事件关联电位进行评估。结果与结论:①相容情境作业下,年轻人与高身体活动量老人的反应时间皆显著快于低身体活动量老人;不相容情境下,年轻人显著快于老年人,而高身体活动量老年人显著快于低身体活动量老年人;②老年人与年轻人在低难度作业下的Stroop效果不存在差异,但在难度较大的作业中,Stroop效果一致表现为低身体活动量老年人显著高于高身体活动量老年人,而高身体活动量老年人显著高于年轻人;③不论作业难度、作业情境及组别差异如何,FZ、CZ与PZ三电极P300潜伏时间一致表现为低身体活动量老年人显著高于高身体活动量老年人及年轻人,而高身体活动量老年人与年轻人的潜伏时间无差异;④FZ、CZ、PZ三电极P300振幅差异明显,其中高身体活动量老年人在FZ电极的P300振幅显著大于低身体活动量老年人及年轻人,而在CZ、PZ两电极处表现为低身体活动量老年人显著小于高身体活动量老年人及年轻人;⑤结果表明,与低身体活动量的老年人相比,高身体活动量老年人进行与干扰控制有关的Stroop作业时拥有更快的反应时间,更高的注意力资源投入及更快的信息处理速度,并且发展出较全面的额叶补偿机制,以维持与年轻人相当的认知处理效率。BACKGROUND:Physical activities contribute to improving cognitive function of the elderly,but the underlying mechanism remains unclear.OBJECTIVE:To explore the brain compensation mechanism of physical activity for cognitive function improvement in the elderly.METHODS:Forty-five volunteers were recruited and divided into three groups:low-and moderate-intensity physical activity group(n=15 older adults),high-intensity physical activity(n=15 older adults)and youth group(n=15).Brain waves(Fz,F3,F4,Cz,C3,C4,Pz,P3,P4,T3,T4,Oz,O1,O2)were measured and assessed according to event-related potentials.Stroop task was used as a test tool in consistent and incompatible situations to explore the performance of interference control in the execution of control function.RESULTS AND CONCLUSION:The response time of young people with high-intensity physical activity was significantly faster than that of old adults with low-intensity physical activity in compatible situation,while that of young people with high-intensity physical activity was significantly faster than that of old adults with low-intensity physical activity in incompatible situation.The Stroop effect was not different between the elderly and the young people in the low-difficulty task.But in the more difficult task,the Stroop effect was consistent in that the elderly with low-intensity physical activity was significantly higher than the elderly with high-intensity physical activity,while the elderly with high physical activity was significantly higher than the youth.Regardless of the difficulty of the task and the work situation,the P300 latency time of Fz,Cz and Pz was significantly higher in the elderly with low-intensity physical activity than in the elderly and youth with high-intensity physical activity,while there was no difference in the latency time between the elderly and young with high physical activity.The amplitude of Fz,Cz,Pz three-electrode P300 was significantly different,especially in the high physical activity.The amplitude of P300 at Fz electrode in t

关 键 词:老年人 身体活动量 认知功能 事件关联电位 认知处理效率 大脑补偿机制 脑波测量 执行控制能力 运动活动 认知 执行功能 组织工程 

分 类 号:R496[医药卫生—康复医学;医药卫生—临床医学]

 

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