Perceptual wholes can reduce the conscious accessibility of their parts

Humans can rapidly extract object and category information from an image despite surprising limitations in detecting changes to the individual parts of that image. In this article we provide evidence that the construction of a perceptual whole, or Gestalt, reduces awareness of changes to the parts of this object. This result suggests that the rapid extraction of a perceptual Gestalt, and the inaccessibility of the parts that make up that Gestalt, may in fact reflect two sides of the same coin whereby human vision provides only the most useful level of abstraction to conscious awareness.

[1]  Jordan W. Suchow,et al.  Motion Silences Awareness of Visual Change , 2011, Current Biology.

[2]  Karl Verfaillie,et al.  Perception of biological motion: A stimulus set of human point-light actions , 2004, Behavior research methods, instruments, & computers : a journal of the Psychonomic Society, Inc.

[3]  D H Brainard,et al.  The Psychophysics Toolbox. , 1997, Spatial vision.

[4]  Miko M. Wilford,et al.  Does Facial Processing Prioritize Change Detection? , 2010, Psychological science.

[5]  S. Hochstein,et al.  View from the Top Hierarchies and Reverse Hierarchies in the Visual System , 2002, Neuron.

[6]  Q. Vuong,et al.  Incidental Processing of Biological Motion , 2004, Current Biology.

[7]  A. Treisman,et al.  A feature-integration theory of attention , 1980, Cognitive Psychology.

[8]  R. Blake,et al.  What constitutes an efficient reference frame for vision? , 2002, Nature Neuroscience.

[9]  A. Treisman.  The binding problem , 1996, Current Opinion in Neurobiology.

[10]  S. Thorpe,et al.  Speed of processing in the human visual system , 1996, Nature.

[11]  P. Schyns,et al.  Blind to Object Changes: When Learning the Same Object at Different Levels of Categorization Modifies Its Perception , 1999 .

[12]  F. Fang,et al.  Cortical responses to invisible objects in the human dorsal and ventral pathways , 2005, Nature Neuroscience.

[13]  Kurt Gottschaldt,et al.  Über den Einfluß der Erfahrung auf die Wahrnehmung von Figuren , 1926 .

[14]  M. Pavlova,et al.  Orientation specificity in biological motion perception , 2000, Perception & psychophysics.

[15]  J. Cutting,et al.  The minimum principle and the perception of absolute, common, and relative motions , 1982, Cognitive Psychology.

[16]  G. Johansson.  Visual perception of biological motion and a model for its analysis , 1973 .

[17]  Ayse Pinar Saygin,et al.  In the Footsteps of Biological Motion and Multisensory Perception , 2008, Psychological science.

[18]  Karl Verfaillie,et al.  Creating stimuli for the study of biological-motion perception , 2002, Behavior research methods, instruments, & computers : a journal of the Psychonomic Society, Inc.

[19]  O. Reiser,et al.  Principles Of Gestalt Psychology , 1936 .

[20]  F. Restle.  Coding theory of the perception of motion configurations. , 1979, Psychological review.

[21]  Ronald A. Rensink,et al.  TO SEE OR NOT TO SEE: The Need for Attention to Perceive Changes in Scenes , 1997 .

[22]  N. Kanwisher,et al.  Only some spatial patterns of fMRI response are read out in task performance , 2007, Nature Neuroscience.

[23]  S. Sumi.  Upside-down Presentation of the Johansson Moving Light-Spot Pattern , 1984, Perception.

[24]  D G Pelli,et al.  The VideoToolbox software for visual psychophysics: transforming numbers into movies. , 1997, Spatial vision.