视觉注意捕获的神经相关  

Neural Correlates of Visual Attentional Capture

作　　者：邹腾甜[1] 周曙[1] 晏丽君[1] 王优[2] 

机构地区：[1]南方医科大学南方医院神经内科,中国广州510515 [2]南方医科大学公共卫生与热带医学学院心理学系

出　　处：《中国健康心理学杂志》2014年第6期870-871,共2页China Journal of Health Psychology

基　　金：国家自然科学基金项目(编号:81200962)资助

摘　　要：目的：利用事件相关电位（ ERP）时空模式考察视觉注意捕获相关的神经网络活动。方法15名受试者搜索和按键判定8个视觉项目中的一个形状特异目标，实验条件划分根据是否存在突出颜色分心物，采用配对t检验比较两种条件下的行为绩效和ERP数据。结果有突出分心物的反应时（791．20±62．22）ms显著长于无突出分心物（772．40±53．77）ms：t（14）＝4．26，P＜0．001。 ERP的t值统计参数映像提示显著的脑区和时段包括：右侧额顶颞区（140～180 ms）、后枕区和额正中区（220～260 ms）、双侧额区（360～460 ms）。结论突出分心物产生了行为分心效应。先后激活的右腹侧和背侧注意网络共同构成了注意捕获的神经基础。Objective To investigate the neural network activities of attentional capture during a visual search task with spatiotempo -ral patterns of ERP .Methods Fifteen subjects were asked to search and judge a specific target from 8 items,and an irrelevant color （ red or green） singleton distractor appeared on 50%of trials.Paired t-test was carried out for behavior performance and ERP data .Results The reaction time was significantly slower for the salient distractor （791.20 ±62.22 ms） compared with that of the non-salient one （772.40 ±53.77 ms）：t（14）=4.26,P〈0.001.The statistical parametric mapping of t -value of ERP revealed significant activations in the right-lateralized frontal-parietal-temporal area（140-180 ms）,the occipital and central fronto-parietal（220-260 ms）,as well as the bilateral frontal areas（360-460 ms）.Conclusion The salient distractor results in attentional capture in behavioral performance . The right ventral attentional network is activated before the dorsal attentional network ,and the activations in both networks are the neural underpinnings of attentional capture .

关 键 词：视觉注意 注意网络 注意捕获 事件相关电位 

分 类 号：B842.2[哲学宗教—基础心理学]