具体性对图标理解影响的事件相关电位研究  

Event-related potential study on concretness effects to icon comprehension

作　　者：宫勇[1] 杨颖[1] 张三元[1] 钱晓帆[1] 

机构地区：[1]浙江大学计算机科学与技术学院,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2013年第6期1000-1005,共6页Journal of Zhejiang University：Engineering Science

基　　金：国家"973"重点基础研究发展规划资助项目(2009CB320804);广东省教育部产学研结合资助项目(2010B090400193)

摘　　要：为了考察形象图标和抽象图标在语义匹配和语义不匹配条件下的认知加工过程,实验要求12名被试判断屏幕中呈现的图标与词语所表达的含义是否一致的同时做快速按键反应,并记录被试的行为数据和事件相关电位(ERP)数据.实验结果发现:与形象图标相比,抽象图标所需的反应时间长、正确率低;语义匹配时比语义不匹配时抽象图标所需反应时间短,正确率高;语义匹配时抽象图标能引发波幅较小的N400成分,而语义不匹配时形象图标和抽象图标均能引发波幅较大的N400成分;N400波幅在大脑不同区域存在明显差异.研究结果表明图标具体性对图标理解有显著影响.In order to investigate the cognitive processing of concrete icons and Abstract icons under semantic match and mismatch conditions,12 subjects were required to judge if the icon-word pairs presented on the screen have the same meaning and press the buttons quickly at the same time,and their behavior and event-related potential（ERP） data were collected.Experimental results showed that the reaction times were longer and the accuracy rates were lower for Abstract icons than for concrete icons.In contrast with semantic mismatched conditions,the reaction times were shorter and the accuracy rates were higher when the semantic matched.The ERP results indicated that Abstract icons elicited a small N400 under semantic match conditions,and both concrete icons and Abstract icons elicited a lager N400 when the semantic mismatched.The N400 amplitudes distributed in different brain areas existed obvious difference.This study indicates that the icon concreteness significantly affects the icon comprehension.

关 键 词：图标理解 事件相关电位 具体性 N400 

分 类 号：B842[哲学宗教—基础心理学] TB18[哲学宗教—心理学]