长期高度活跃体力活动对绝经后妇女记忆刷新能力的影响

发布时间：2018-01-31 04:03

本文关键词： 运动活动绝经后妇女记忆刷新阿尔茨海默病　出处：《第二军医大学学报》2017年01期 　论文类型：期刊论文

【摘要】：目的研究绝经后妇女记忆刷新能力受高度活跃体力活动影响的行为和大脑神经活动特点,为有效帮助绝经后妇女减缓记忆能力衰退和预防损伤提供科学依据。方法采用国际体力活动量表中文版(IPAQ-短卷)评定绝经后妇女日常生活中长期保持的体力活动水平,选取高度活跃体力活动者20例(高度活跃组)和非高度活跃体力活动者20例(普通对照组)。运用事件相关脑电位和行为监测技术,采集两组绝经后妇女在完成记忆刷新任务过程中的行为反应和脑电数据。结果在图形匹配n-Back任务中,高度活跃组在高、低负荷任务中的反应速度和行为准确性均优于普通对照组。在图形信息编码、匹配、刷新和短时储存过程中,两组的P3波幅均随记忆负荷的增加而下降。普通对照组对认知负荷较为敏感,即3-Back的P3潜伏期短于1-Back;而高度活跃组受记忆负荷影响小,对认知资源的动员、分配和运用能力强,即1-Back、3-Back的P3波峰以及额-中央-顶区D-N450波幅均大于普通对照组。结论长期保持高度活跃体力活动的绝经后妇女拥有更强的记忆刷新能力,具体反映在动作反应能力更优,对不同记忆负荷的知觉需求适应力强,对记忆内容编码-匹配-刷新-短时储存过程的认知加工策略更灵活、更高效。
[Abstract]:Objective to study the behavior and neuroactivity of postmenopausal women whose memory refresh ability is affected by highly active physical activity. To provide scientific basis for effectively helping postmenopausal women to slow down memory decline and prevent injury. Methods the IPAQ- short volume of the International physical activity scale was used. To assess the level of physical activity maintained by postmenopausal women in daily life for a long period of time. Twenty cases of highly active physical activity (highly active group) and 20 cases of non-hyperactive physical activity (normal control group) were selected. Event-related brain potentials and behavioral monitoring techniques were used. The behavioral responses and EEG data of two groups of postmenopausal women were collected during the memory refresh task. Results in the graph matching n-Back task, the highly active group was high. The response speed and behavioral accuracy of low-load tasks were better than those of the normal control group. In the process of graphic information coding, matching, refresh and short-term storage. The amplitude of P3 in both groups decreased with the increase of memory load. The normal control group was more sensitive to cognitive load, that is, the P3 latency of 3-Back was shorter than that of 1-Back. But the highly active group is less affected by memory load, and has strong ability of mobilization, distribution and application of cognitive resources, I. E. 1-Back. The P3 peak of 3-Back and D-N450 amplitude of fronto-central parietal region were higher than those of normal control group. Conclusion Postmenopausal women who maintained high physical activity for a long time had stronger memory refresh ability. The results show that the cognitive processing strategies of memory content coding, matching, refresh and short time storage are more flexible and efficient.
【作者单位】：上海体育学院运动科学学院运动心理学系;英国格拉斯哥大学教育学院;第二军医大学心理与精神卫生学系心理学教研室;
【基金】：国家体育总局全民健身研究领域课题(2015B078) 上海市人类运动能力开发与保障重点实验室项目(11DZ2261100) 运动认知评定与调控国家体育总局重点实验室项目~~
【分类号】：R87
【正文快照】： [Acad J Sec Mil Med Univ,2017,38(1):48-55]记忆刷新(memory updating)能力是大脑根据外部环境不断觉察和编码有用信息,在工作记忆中提取相关信息并进行匹配、刷新和短时储存,向特定脑区传递恰当指令、抑制干扰信息,并持续进行修正,以便纳入新信息的能力[1]。记忆刷新能力是

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