睡眠剥夺对短时记忆的影响研究
发布时间：2018-12-08 13:06
【摘要】： 睡眠是人体的基本生理和心理的需要,由于各种原因引起的睡眠剥夺可对人体的各方面功能特别是认知功能产生影响,主要包括记忆、注意力及警觉水平等。研究睡眠剥夺对认知影响的作用机理不仅是探索睡眠作用机制的一条有效途径,而且为提出对抗措施提供依据。因此国外对该领域的研究通过脑功能成像、心理科学评价、电生理方法等,已得到一些初步结论,但尚未形成统一的评价方法。国内这方面的研究多侧重于心理学的评价方法。采用电生理的方法来研究睡眠剥夺对认知功能的影响,所得数据是脑神经元群活动的直接客观反映。与一般心理学研究方法不同的是,这种方法不但可以对外来刺激下的功能反应进行研究,还可研究大脑的自发功能状态。本研究采用基于脑电EEG数据的电生理方法来评价睡眠剥夺对认知活动的影响。 由于人体在认知过程中所直接面对的常常是关于感觉和心理的记忆而不是感觉和心理本身,即使在没有明显回忆时也有感觉记忆和短时记忆起作用。因此本研究主要关注的是睡眠剥夺对记忆特别是短时记忆所造成的影响。本研究根据认知心理学中关于短时记忆的理论和最新研究成果,通过应用不同的刺激材料,包括视觉的不同颜色记忆材料与听觉的不同数组的记忆材料进行的记忆测试实验,从而从视觉到听觉全方位的对睡眠剥夺造成的损害进行了评定。以往的电生理分析方法主要采用的是事件相关电位( Event-related Potential ,ERP)成分分析法,只是从单个脑区出发对心理认知功能加以研究。但由于大脑的认知过程是大脑各功能区共同整合的结果,因此本研究采用关注脑区同步化的评价及研究手段,通过对脑电EEG数据的相关性分析和脑部FFT成像分析,探讨了睡眠剥夺对短时记忆影响的作用机制。 本研究发现睡眠剥夺主要是造成大脑活动减弱区域的偏移与集中,各功能区之间的关联下降,发现睡眠剥夺对视觉记忆的损害主要是对额叶造成了影响,从而降低了记忆的编码阶段的作用及功能;而对听觉记忆的损害主要是对顶叶和颞叶造成影响,从而损害记忆提取阶段的作用及功能。
[Abstract]:Sleep is the basic physiological and psychological needs of the human body. Sleep deprivation caused by various reasons can have an impact on all aspects of human body functions, especially cognitive function, including memory, attention and alertness. Studying the mechanism of sleep deprivation on cognition is not only an effective way to explore the mechanism of sleep, but also provides a basis for countermeasures. Therefore, some preliminary conclusions have been obtained through brain functional imaging, psychological science evaluation, electrophysiological methods and so on, but a unified evaluation method has not yet been formed. Domestic research focuses on the evaluation methods of psychology. The effects of sleep deprivation on cognitive function were studied by electrophysiological method. Different from general psychological research methods, this method can not only study the functional responses to external stimuli, but also study the state of spontaneous function of the brain. In this study, electrophysiological methods based on EEG data were used to evaluate the effects of sleep deprivation on cognitive activity. Because the human body in the cognitive process is often directly faced with the feeling and psychological memory rather than the feeling and psychology itself, even when there is no obvious memory, there are sensory memory and short-term memory to play a role. Therefore, this study focuses on the effects of sleep deprivation on memory, especially short-term memory. According to the theory of short-term memory in cognitive psychology and the latest research results, the experiment was carried out by using different stimulative materials, including the memory materials of different colors of vision and different arrays of hearing. The damage caused by sleep deprivation was evaluated from visual to auditory. The previous methods of electrophysiological analysis mainly used event-related potential (Event-related Potential, ERP) component analysis, only from a single brain area to study the psychological cognitive function. However, because the cognitive process of the brain is the result of the integration of the functional regions of the brain, this study adopts the evaluation and research methods of paying close attention to the synchronization of the brain regions, through the correlation analysis of EEG data and the analysis of brain FFT imaging. To explore the effect of sleep deprivation on short-term memory. In this study, we found that sleep deprivation mainly caused the deviation and concentration of reduced brain activity and the decrease of the correlation between the functional areas. It was found that the damage of sleep deprivation to the visual memory was mainly caused by the influence on the frontal lobe. Thus, the function and function of the coding stage of memory are reduced. The impairment of auditory memory mainly affects parietal lobe and temporal lobe, thus impairing the function and function of memory extraction stage.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：R363
本文编号：2368395
[Abstract]:Sleep is the basic physiological and psychological needs of the human body. Sleep deprivation caused by various reasons can have an impact on all aspects of human body functions, especially cognitive function, including memory, attention and alertness. Studying the mechanism of sleep deprivation on cognition is not only an effective way to explore the mechanism of sleep, but also provides a basis for countermeasures. Therefore, some preliminary conclusions have been obtained through brain functional imaging, psychological science evaluation, electrophysiological methods and so on, but a unified evaluation method has not yet been formed. Domestic research focuses on the evaluation methods of psychology. The effects of sleep deprivation on cognitive function were studied by electrophysiological method. Different from general psychological research methods, this method can not only study the functional responses to external stimuli, but also study the state of spontaneous function of the brain. In this study, electrophysiological methods based on EEG data were used to evaluate the effects of sleep deprivation on cognitive activity. Because the human body in the cognitive process is often directly faced with the feeling and psychological memory rather than the feeling and psychology itself, even when there is no obvious memory, there are sensory memory and short-term memory to play a role. Therefore, this study focuses on the effects of sleep deprivation on memory, especially short-term memory. According to the theory of short-term memory in cognitive psychology and the latest research results, the experiment was carried out by using different stimulative materials, including the memory materials of different colors of vision and different arrays of hearing. The damage caused by sleep deprivation was evaluated from visual to auditory. The previous methods of electrophysiological analysis mainly used event-related potential (Event-related Potential, ERP) component analysis, only from a single brain area to study the psychological cognitive function. However, because the cognitive process of the brain is the result of the integration of the functional regions of the brain, this study adopts the evaluation and research methods of paying close attention to the synchronization of the brain regions, through the correlation analysis of EEG data and the analysis of brain FFT imaging. To explore the effect of sleep deprivation on short-term memory. In this study, we found that sleep deprivation mainly caused the deviation and concentration of reduced brain activity and the decrease of the correlation between the functional areas. It was found that the damage of sleep deprivation to the visual memory was mainly caused by the influence on the frontal lobe. Thus, the function and function of the coding stage of memory are reduced. The impairment of auditory memory mainly affects parietal lobe and temporal lobe, thus impairing the function and function of memory extraction stage.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：R363
【引证文献】
相关博士学位论文 前1条
1 吴冠儒;台北地区慢性失眠症与记忆功能损害相关性调查及中药干预研究[D];北京中医药大学;2011年
，本文编号：2368395
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