持续指压反馈与传统持续注意任务的行为操作低频振幅的比较研究

摘要个体内反应时变异是持续注意力的一个重要认知指标，最近研究发现个体内反应时变异的增加主要存在于低频部分（0。05Hz 左右），但是传统持续注意任务有认知负荷复杂，采样率低等问题，不利于做深入的频率分析，为此近年来提出了持续指压任务。然而它作为一种新的测量持续注意力的范式需要与传统持续注意任务做比较。本研究包括两个实验，在实验一中 56 个健康大学生（平均年龄 21±2 岁，28 名男性）完成 Go/Nogo 任务、持续指压真反馈和假反馈三个任务；在实验二中，另外的 64 名健康大学生（平均年龄 22±2 岁，32 名男性）完成 Eriksen Flanker 任务、持续指压真反馈和假反馈三个任务。结果显示持续指压真假反馈和 Go/Nogo 任务的行为操作低频振幅在各个频段上的相关性均不显著；持续指压真反馈和 Eriksen Flanker 任务的行为操作低频振幅在 0。01-0。027Hz 这个频段上显著相关，持续指压假反馈和 Eriksen Flanker 任务的行为操作低频振幅在 0。027-0。073Hz 这个频段上显著相关。这些结果证明持续指压反馈可用于持续注意力的研究。89068

Intra-inpidual variability in response time (RT-IIV) is a major characteristic of sustained attention。 Recently, it was found that RT-IIV is in low frequency (about 0。05Hz), but traditional sustained attention tasks include complicated cognitive load and low sample rate, and they are not appropriate for frequency analysis。 Hence, continuous finger force feedback was proposed。 However, this is a new sustained attention paradigms which needs to compare with traditional tasks。 The present study includes two experiments。 In experiment-1, 56 healthy college students (21 ± 2 years old, 28 males) completed 3 tasks, Go/Nogo task, Real-time finger force feedback, and Sham finger force feedback。 In experiment-2, 64 healthy college students (22 ± 2 years old, 32 males) completed 3 tasks, Eriksen Flanker task, Real-time finger force feedback, and Sham finger force feedback。 The results showed that no significant correlation between Go/Nogo task and real-time or sham finger force feedback with behavioral low frequency fluctuation。 The significant correlation between tasks was manifested in 0。01-0。027Hz between real-time finger force feedback and Eriksen Flanker task, and in 0。027-0。073Hz between sham finger force feedback and Eriksen Flanker task。 These findings revealed that continuous finger force feedback could be used for the study of sustained attention。源Y于U优I尔O论P文W网wwW.yOueRw.com 原文+QQ75201-8766

毕业论文关键词：持续注意力；低频振幅；个体内反应时变异

Keyword: sustained attention ； amplitude of low frequency fluctuation ；

Intra-inpidual variability in response time

1 引言 1

2 方法 5

2。1 实验一 5

2。1。1 被试 5

2。1。2 实验材料 5

2。1。3 实验设计 6

2。2 实验二 6

2。2。1 被试 6

2。2。2 实验设计 6

2。3 数据处理 6

2。3。1 预处理持续指压反馈与传统持续注意任务的行为操作低频振幅的比较研究:http://www.youerw.com/yixue/lunwen_176090.html