中国科学院心理研究所机构知识库

The study was related to the global dominance in visual unconscious processing when the subjects allocated attention to a local part of geometric shapes. The subjects were 60 college students in Tianjin Normal University. The experimental software E-prime was used to control the presentation of stimuli. The participants were not informed of the presence of the geometric prime and simply engaged in discriminationg the orientation or color of the central line segment contained in the target. With multi-variate analysis of variance （ MANOVA ）, the priming effects were investigated. The results showed that there was global dominance in visual unconscious perception when the participants discriminated the target line orientation, and they responded more lowly in congruent trials （the global shapes of the prime and the target were the same） than in incongruent trials （the global shapes were different）, but the selection of local colors for response purposes or the sides of the geometric priming shapes getlving did cormected could eliminate the global dominance effect. It is suggested that global shape dominance is related to the form or the color pathway of visual processing, and a bias inhibition to the prime global shape may be involved when subjects are engaged in a local shape discrimination task.

国家自然科学基金(39970256) 中国科学院知识创新青年科学家小组、中国科学院知识创新工程项目(kscx2-2-03) 教育部人文社会科学重点研究基地基金资助