ABSTRACT
People are very skilled at understanding each other's facial expressions. The physiological literature also suggests differences in the neural coding of facial identity and expression in other primates, and PET studies of humans have shown differences between brain regions involved in the analysis of identity and expression, and demonstrated the possible existence of emotion-specific responses to facial expressions. Dimensional accounts, then, can be used to predict the consequences for identification of physically transforming one facial expression to another. It is possible, then, to change one facial expression to another by computer morphing, and from the Woodworth and Schlosberg schema we can predict the consequences for identification if this dimensional account is correct. In previous studies of identification of morphed images of facial expressions by normal perceivers, only a limited number of continua have been tested at any given time.
