【摘要】 目的:研究不同活跃程度体力活动对女性老年人抑制能力影响的行为和大脑神经活动特点,从而更好地帮助老年人减缓抑制能力衰退。方法:运用行为监测和事件相关电位技术,采集不同体力活动水平的女性老年人在完成反应抑制任务过程中的行为和脑电数据。结果:(1)高度活跃体力活动组的Go反应时显著快于中等活跃体力活动组(P<0.01);Nogo抑制成功率相近,高度活跃组略优于中度活跃组。(2)与中度活跃组相比,高度活跃组诱发的N2波峰和P3波峰更小,在额区诱发的Go-N2潜伏期(P<0.05)和顶区诱发的Nogo-P3潜伏期(P<0.05)更短。结论:高度活跃体力活动的女性老年人拥有更优的反应能力和抑制能力,主要体现在高度活跃体力活动女性老年人的认知处理速度更快、注意资源分配更广和行为抑制加工能力更强。更多还原

【Abstract】 Objective This paper focused on the effect of different physical activity(PA)levels on the inhibition ability and central nerve activity of the elderly in order to provide evidence for slowing down the decline process of inhibition ability. Methods Drawing support from the behavioral surveillance and event-related potential technique,we collected the behavior and electroencephalographic data of the aged women with different physical activity level during undertaking the response inhibition task. Results(1)The Go reaction time(RT)of high-level PA group is significantly shorter than the moderate-level PA group(P < 0.01),and Nogo successful inhibition ratio of high-level PA group is slightly better than moderate PA group.(2)The amplitudes of N2 and P3 waves provoked by high-level PA is lower,and the latency periods of Go-N2 at frontal area and of Nogo-P3 at parietal area provoked by high-level PA are shorter than that by moderate PA. Conclusion The aged women with high-level PA enjoy better reaction and inhibition ability,reflecting in faster cognitive processing,wider attention resources allocation and stronger behavioral inhibition.更多还原