摘要
采用事件相关电位方法,以面孔、汽车、鸟和椅子为刺激,在汽车搜索作业及分类判断作业两种条件下考察了N170面孔特异性效应。结果发现,面孔在两种条件下均引起明显不同于其余三类物体的N170。实验任务对汽车刺激有明显的影响,具体表现为:在搜索作业下,汽车N170有接近面孔N170的趋势,其波幅显著大于鸟、椅子N170的波幅;在分类作业中,则没有这种显著的差异。从而为证明存在面孔识别的特异性神经机制提供了证据。
The peresent study uses Event-Related Potentials method which takes faces, cars, birds and chairs as stimuli to study the N170 face-specific mechanism under the conditions of car monitoring task and animacy decision task. It＇s found that N170 induced by faces was obviously different from those induced by other kinds of stimuli. ERPs induced by cars showed different patterns when conditions differed： under car monitoring task, N170 induced by cars showed a similar trend as N170 induced by faces which had much bigger amplitude than those of birds and chairs; while under animacy decision task there was no such difference. All of these could provide evidence for the existence of face-specific neural mechanism.
出处
《心理与行为研究》
2005年第4期268-274,共7页
Studies of Psychology and Behavior
基金
教育部人文社会科学重点研究基地05JJDXLX003重大项目
天津市科技发展计划项目的资助
