本文關鍵詞： 威脅信息 即時目標 注意偏向 注意警覺 注意脫離困難　出處：《上海師范大學》2017年碩士論文　論文類型：學位論文

【摘要】：個體通過將有限的注意資源聚焦在可能的威脅信息上會大大增加個體生存的幾率,威脅加工的進化模型理論認為對潛在威脅的加工很大程度上是刺激驅(qū)動的,依賴于快速的皮下通道且不受當前任務目的和意圖的影響。然而有研究表明在加工即時目標相關的信息時會自動獲得注意分配。注意偏向不僅會表現(xiàn)在威脅信息的加工中,同時也會出現(xiàn)在即時目標加工中。因此,即時目標與威脅信息同時出現(xiàn)時對威脅信息注意偏向的影響有待進一步研究。本文通過三個實驗分別探討即時目標對威脅信息注意偏向的影響、閾限下即時目標對威脅信息注意偏向的影響以及即時目標對威脅信息注意偏向不同成分的影響。實驗1分為實驗1a,1b,1c三個小實驗,均采用點探測的范式從行為測試及ERP的角度來考察即時目標對威脅信息注意偏向的影響。實驗2分為2a和2b,分別探討了閾下加工條件下,威脅作為任務相關或不相關刺激時,對威脅信息和即時目標的注意偏向的特點。實驗3采用改良的空間線索范式分別考察當威脅信息作為任務相關及不相關任務時即時目標對威脅注意偏向不同成分的影響。結(jié)果表明,在行為層面即時目標會搶奪更多的注意資源,從而影響威脅信息的注意偏向。而在威脅同時是任務相關刺激時,個體會表現(xiàn)出對威脅目標和即時目標的注意偏向。ERP結(jié)果表明,個體在注意加工早期已覺察到威脅信息,在注意加工的后期受到當前任務的調(diào)節(jié)影響。閾下加工的結(jié)果表明,不管威脅是否屬于任務相關信息,都不會產(chǎn)生對威脅的注意偏向�？臻g線索范式的結(jié)果表明,即時目標不僅會影響威脅信息注意警覺階段,同時也會影響注意脫離困難階段。
[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.
【學位授予單位】：上海師范大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：B842.3

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