Expression recognition is important for our social interaction and communications, but the role of face-selective regions in discriminating various facial expressions remain unclear, especially when the expressions came from multi-cultural backgrounds. In this study, 800 facial expressions collected from 5 different facial expression databases with western or eastern cultural backgrounds were shown to the subjects in a slow event-related fMRI experiment. The subjects were instructed to indicate the category of facial expressions (happy, disgust, angry or neutral) by pressing different buttons. One multivariate pattern analysis method, support vector machine was trained to predict the categories of facial expressions. Results showed that: (1) the face selective regions differed in their ability for expression decoding, but a similar pattern was observed, with a predominance to classify facial expressions with opposite valence, i.e. happy vs. fear and happy vs. disgust. Besides, angry vs. disgust and happy vs. neutral achieved the lowest results. (2) the accuracies of facial expression classification cross-databases were as high as the accuracy of the generalization across runs withindatabase. These results provided evidence for the consistency of the representation of facial expressions in human brain with different culture backgrounds.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.