Morphing Marilyn into Maggie dissociates physical and identity.pdfVIP

A R T I C L E S e Morphing Marilyn into Maggie dissociates physical c n e i c s and identity face representations in the brain o r u e n e 1 1,2 3 1,2 1 r Pia Rotshtein , Richard N A Henson , Alessandro Treves , Jon Driver Raymond J Dolan u t a n / m o How the brain represents different aspects of faces remains controversial. Here we presented subjects with stimuli drawn from c e. morph continua between pairs of famous faces. In the paired presentations, a second face could be identical to the first, could r u share perceived identity but differ physically (30% along the morph continuum), or could differ physically by the same distance t a n. along the continuum (30%) but in the other direction. We show that, behaviorally, subjects are more likely to classify face pairs w in the third paired presentation as different and that this effect is more pronounced for subjects who are more familiar with the w w faces. In functional magnetic resonance imaging (fMRI), inferior occipital gyrus (IOG) shows sensitivity to physical rather than / / : p to identity changes, whereas right fusiform gyrus (FFG) shows sensitivity to identity rather than to physical changes. Bilateral t t h anterior temporal regions show sensitivity to identity change that varies with the subjects’ pre-experimental familiarity with the p faces. These findings provide neurobiological support for a hierarchical model of face perception. u o r G g n Recognizing the face of a particular individual, such as Marilyn Monroe, Here we have used morphs between famous faces in behavioral and i h can be achieved across different lighting, views, h