The Perceptual Deficit in Congenital Prosopagnosia

Despite decades of investigation of prosopagnosia, the nature of the perceptual deficit underlying this condition has never been rigorously assessed. Nor even has it been established if there is a perceptual deficit, as opposed to a deficit in memory or a failure of view invariance. Individuals classified as prosopagnosic do have difficulty in discriminating some non-face visual entities. Performance on a minimal simultaneous match-to-sample...