A whole face is more than the sum of its halves: Interactive processing in face perception

Facial information is processed interactively. Yet, such interactive processing has been examined for discrimination of face parts rather than complete faces. Here we assess interactive processing using a novel paradigm in which subjects discriminate complete faces. Face stimuli, which comprise unilateral facial information (hemifaces) or bilateral facial information from one face (consistent) or two different faces (inconsistent), are shown centrally in a face‐matching task. If each half of a complete face is processed independently, accuracy for complete faces can be predicted by the union of accuracies for right and left hemifaces. However, accuracy exceeded this independence prediction for consistent faces (facilitation) and fell below the prediction for inconsistent faces (interference). These effects were reduced or absent for inverted faces. Our findings are consistent with reports of stronger interactive processing for upright than for inverted faces and they quantify effects of interactive processing on the discrimination of complete faces.

[1]  M. Farah,et al.  What causes the face inversion effect? , 1995, Journal of experimental psychology. Human perception and performance.

[2]  A. Milner,et al.  Lateralised perception of bilateral chimaeric faces by normal subjects , 1977, Nature.

[3]  G. Winocur,et al.  What Is Special about Face Recognition? Nineteen Experiments on a Person with Visual Object Agnosia and Dyslexia but Normal Face Recognition , 1997, Journal of Cognitive Neuroscience.

[4]  R. Yin.  Looking at Upside-down Faces , 1969 .

[5]  M Moscovitch,et al.  SUPER FACE-INVERSION EFFECTS FOR ISOLATED INTERNAL OR EXTERNAL FEATURES, AND FOR FRACTURED FACES , 2000, Cognitive neuropsychology.

[6]  T. Allison,et al.  Electrophysiological Studies of Face Perception in Humans , 1996, Journal of Cognitive Neuroscience.

[7]  T. Allison,et al.  Electrophysiological studies of human face perception. II: Response properties of face-specific potentials generated in occipitotemporal cortex. , 1999, Cerebral cortex.

[8]  D. Maurer,et al.  Configural Face Processing Develops more Slowly than Featural Face Processing , 2002, Perception.

[9]  A. Young,et al.  Configurational Information in Face Perception , 1987, Perception.

[10]  Stefan R Schweinberger,et al.  Interhemispheric cooperation for familiar but not unfamiliar face processing , 2002, Neuropsychologia.

[11]  S. Carey,et al.  Why faces are and are not special: an effect of expertise. , 1986, Journal of experimental psychology. General.

[12]  G. Hole.  Configurational Factors in the Perception of Unfamiliar Faces , 1994, Perception.

[13]  Stefan R Schweinberger,et al.  Interhemispheric cooperation for face recognition but not for affective facial expressions , 2003, Neuropsychologia.

[14]  M. Tarr,et al.  The Fusiform Face Area is Part of a Network that Processes Faces at the Individual Level , 2000, Journal of Cognitive Neuroscience.

[15]  K. Luh,et al.  Interhemispheric Cooperation: Left Is Left and Right Is Right, but Sometimes the Twain Shall Meet , 1995 .

[16]  M. Farah,et al.  What is "special" about face perception? , 1998, Psychological review.

[17]  N. Kanwisher.  Domain specificity in face perception , 2000, Nature Neuroscience.

[18]  M. Tarr,et al.  Can Face Recognition Really be Dissociated from Object Recognition? , 1999, Journal of Cognitive Neuroscience.

[19]  J. Tanaka,et al.  Features and their configuration in face recognition , 1997, Memory & cognition.

[20]  N. Kanwisher,et al.  The selectivity of the occipitotemporal M170 for faces , 2000, Neuroreport.

[21]  Effects of bilateral stimulation and stimulus redundancy on interhemispheric interaction. , 1999, Neuropsychology.

[22]  M. Farah,et al.  Parts and Wholes in Face Recognition , 1993, The Quarterly journal of experimental psychology. A, Human experimental psychology.

[23]  Matthew Flatt,et al.  PsyScope: An interactive graphic system for designing and controlling experiments in the psychology laboratory using Macintosh computers , 1993 .

[24]  Marks Nl,et al.  Effects of bilateral stimulation and stimulus redundancy on interhemispheric interaction. , 1999 .

[25]  N. Kanwisher,et al.  The Fusiform Face Area: A Module in Human Extrastriate Cortex Specialized for Face Perception , 1997, The Journal of Neuroscience.