CASIA OpenIR  > 中国科学院分子影像重点实验室
Different brain activations between own- and other-race face categorization: An fMRI study using group independent component analysis
Wei, Wenjuan; Liu, Jiangang; Dai, Ruwei; Feng, Lu; Li, Ling; Tian, Jie
Source PublicationSPIE Medical Imaging
Conference Date2014
Conference PlaceSan Diego, California, USA
AbstractPrevious behavioral research has proved that individuals process own- and other-race
faces differently. One well-known effect is the other-race effect (ORE), which indicates that
individuals categorize other-race faces more accurately and faster than own-race faces. The
existed functional magnetic resonance imaging (fMRI) studies of the other-race effect mainly focused on the racial prejudice and the socio-affective differences towards own- and other-race face. In the present fMRI study, we adopted a race-categorization task to determine the activation level differences between categorizing own- and other-race faces. Thirty one Chinese participants who live in China with Chinese as the majority and who had no direct contact with Caucasian individual were recruited in the present study. We used the group independent component analysis (ICA), which is a method of blind source signal separation that has proven to be promising for analysis of fMRI data. We separated the entail data into 56 components which is estimated based on one subject using the Minimal Description Length (MDL) criteria. The components sorted based on the multiple linear regression temporal sorting criteria, and the fit regression parameters were used in performing statistical test to evaluate the task-relatedness of the components. The one
way anova was performed to test the significance of the component time course in different
conditions. Our result showed that the areas, which coordinates is similar to the right FFA
coordinates that previous studies reported, were greater activated for own-race faces than
other-race faces, while the precuneus showed greater activation for other-race faces than own-race faces.
KeywordBrain Functional Magnetic Resonance Imaging Independent Component Analysis
Indexed ByCPCI-T
Document Type会议论文
Corresponding AuthorTian, Jie
Recommended Citation
GB/T 7714
Wei, Wenjuan,Liu, Jiangang,Dai, Ruwei,et al. Different brain activations between own- and other-race face categorization: An fMRI study using group independent component analysis[C],2014.
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