军人自我相关信息注意分类加工的脑电研究

Electroencephalography Study on the Attentional Classification and Processing of Self-related Information of Soldiers

目的为从判断分类角度进一步丰富自我相关信息(self-related information,SRI)注意认知加工的理论,为包含大量SRI军事心理选拔自我评估技术的应用研究提供理论依据。方法本研究招募被试35人,采用经典Oddball范式,以不同自我相关度的城市名为主要实验材料,采用时域分析与频域分析的方法分析脑电指标。结果时域分析结果表明,高SRI能诱发更大幅度的额中央区N2成分。P3的幅值与信息的自我相关程度呈正相关,自我相关程度越高,P3的幅值越大。频域分析发现,在注意分类的theta频段,高SRI幅值显著降低。结论SRI的加工具有层级效应。在做分类任务时,受自我相关度影响,与自我相关度较低的刺激相比,自我相关度高的信息得到了更多的注意资源分配。

Objective To further enrich the theory of self-related information(SRI)attention cognitive processing from the perspective of judgment and classification,and to provide a theoretical basis for the application research of containing a large amount of SRI military psychological selection self-assessment technology.Methods A total of 35 subjects were recruited in this study,using the classical Oddball paradigm,and cities with different self-relevance were selected as the main experimental materials,and electrical indicators were analyzed by time-domain analysis and frequencydomain.Results Time-domain analysis results showed that high SRI could elicit a larger N2 component in the frontal central area.The amplitude of P3 was positively correlated with the degree of SRI.The higher degree of self-relevance,the greater amplitude of P3.Frequency-domain analysis found that the amplitude of high SRI was significantly reduced in the theta frequency band of the attention classification.Conclusion There are hierarchical effects in processing of SRI.When doing classification tasks,affected by the degree of self-relevance,compared with stimuli with lower self-relevance,higher SRI gets more attention to resource allocation.