即时目标对威胁信息注意偏向的影响

发布时间：2018-02-17 07:46

本文关键词： 威胁信息即时目标注意偏向注意警觉注意脱离困难　出处：《上海师范大学》2017年硕士论文　论文类型：学位论文

【摘要】：个体通过将有限的注意资源聚焦在可能的威胁信息上会大大增加个体生存的几率,威胁加工的进化模型理论认为对潜在威胁的加工很大程度上是刺激驱动的,依赖于快速的皮下通道且不受当前任务目的和意图的影响。然而有研究表明在加工即时目标相关的信息时会自动获得注意分配。注意偏向不仅会表现在威胁信息的加工中,同时也会出现在即时目标加工中。因此,即时目标与威胁信息同时出现时对威胁信息注意偏向的影响有待进一步研究。本文通过三个实验分别探讨即时目标对威胁信息注意偏向的影响、阈限下即时目标对威胁信息注意偏向的影响以及即时目标对威胁信息注意偏向不同成分的影响。实验1分为实验1a,1b,1c三个小实验,均采用点探测的范式从行为测试及ERP的角度来考察即时目标对威胁信息注意偏向的影响。实验2分为2a和2b,分别探讨了阈下加工条件下,威胁作为任务相关或不相关刺激时,对威胁信息和即时目标的注意偏向的特点。实验3采用改良的空间线索范式分别考察当威胁信息作为任务相关及不相关任务时即时目标对威胁注意偏向不同成分的影响。结果表明,在行为层面即时目标会抢夺更多的注意资源,从而影响威胁信息的注意偏向。而在威胁同时是任务相关刺激时,个体会表现出对威胁目标和即时目标的注意偏向。ERP结果表明,个体在注意加工早期已觉察到威胁信息,在注意加工的后期受到当前任务的调节影响。阈下加工的结果表明,不管威胁是否属于任务相关信息,都不会产生对威胁的注意偏向。空间线索范式的结果表明,即时目标不仅会影响威胁信息注意警觉阶段,同时也会影响注意脱离困难阶段。
[Abstract]:By focusing the limited attention resources on the possible threat information, the individual will greatly increase the probability of survival. The evolutionary model theory of threat processing believes that the processing of potential threats is largely stimulus-driven. It relies on fast subcutaneous channels and is not affected by the purpose and intention of the current task. However, some studies have shown that attention distribution is automatically obtained when processing information related to immediate targets. Attention bias is not only reflected in the processing of threat information. At the same time, it will also appear in the processing of immediate target. The influence of immediate target and threat information on threat information attention bias needs further study. This paper discusses the effect of immediate target on threat information attention bias through three experiments. The influence of immediate target on threat information attention bias and the influence of immediate target on threat information attention bias under threshold. The effect of immediate target on attention bias of threat information was investigated from the point of view of behavioral test and ERP. Experiment 2 was divided into 2 years and 2 bs. respectively, when threats were treated as task-related or uncorrelated stimuli under subthreshold processing, The characteristics of attention bias towards threat information and immediate target. Experiment 3 uses an improved spatial clue paradigm to examine the different components of threat attention bias when threat information is used as task-related and non-related tasks. The results show that, At the behavioral level, the immediate goal grabs more attention resources, thus affecting the attention bias of threat information. When the threat is also a task-related stimulus, the individual will show an attentional bias towards the threat target and the immediate goal. ERP results show that, Individuals were aware of threat information at the early stage of attention processing and affected by the regulation of the current task at the later stage of attention processing. The results of subthreshold processing showed that whether or not the threat belonged to task-related information, The results of spatial cues paradigm show that the immediate target will not only affect the alert phase of threat information, but also affect the attention out of difficulty stage.
【学位授予单位】：上海师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：B842.3

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