Orientation Discrimination in a Visual Form Agnosic: Evidence from the McCollough Effect

The McCollough effect is a color aftereffect contingent on pattern orientation. The effect was induced in a woman who has a profound impairment in orientation perception due to brain damage. The fact that she experiences the McCollough effect indicates that her visual system is still representing orientation at some level. Further, the finding that her occipital lobe damage is confined mainly to the prestriate regions suggests that the McCollough effect may be mediated by mechanisms at a low level in the visual system, perhaps in area 17.

[1]  R. Gurnsey,et al.  Rapid Discrimination of McCollough Effects , 1991, Perception.

[2]  T. R. Jordan,et al.  Perception and action in 'visual form agnosia'. , 1991, Brain : a journal of neurology.

[3]  L. Jakobson,et al.  A neurological dissociation between perceiving objects and grasping them , 1991, Nature.

[4]  L Weiskrantz,et al.  The Ferrier Lecture, 1989 - Outlooks for blindsight: explicit methodologies for implicit processes , 1990, Proceedings of the Royal Society of London. B. Biological Sciences.

[5]  G. Lockhead,et al.  McCollough aftereffects in strabismus and amblyopia , 1989, Vision Research.

[6]  Alan Cowey,et al.  Wavelength sensitivity in blindsight , 1989, Nature.

[7]  A. Milner,et al.  A Disorder of Lightness Discrimination in a Case of Visual Form Agnosia , 1989, Cortex.

[8]  P Thompson,et al.  Making Mayhew and Frisby Effortlessly Discriminable , 1989, Perception.

[9]  D. Hubel,et al.  Segregation of form, color, movement, and depth: anatomy, physiology, and perception. , 1988, Science.

[10]  P. Stoerig,et al.  Chromaticity and achromaticity. Evidence for a functional differentiation in visual field defects. , 1987, Brain : a journal of neurology.

[11]  R. Browse,et al.  Micropattern properties and presentation conditions influencing visual texture discrimination , 1987, Perception & psychophysics.

[12]  M. R. Houck,et al.  Conjunction of color and form without attention: evidence from an orientation-contingent color aftereffect. , 1986, Journal of experimental psychology. Human perception and performance.

[13]  Peter Thompson,et al.  Colour-contingent after-effects are really wavelength-contingent , 1986, Nature.

[14]  R. Over,et al.  Confusable gratings selectively elicit orientation-contingent colour aftereffects , 1984 .

[15]  R. Savoy,et al.  “Extinction” of the McCollough effect does not transfer interocularly , 1984, Perception & psychophysics.

[16]  E. Essock.  The Oblique Effect of Stimulus Identification Considered with Respect to Two Classes of Oblique Effects , 1980, Perception.

[17]  L. Riggs,et al.  Binocular interactions during establishment of McCollough effects , 1978, Vision Research.

[18]  C. R. Michael.  Color vision mechanisms in monkey striate cortex: simple cells with dual opponent-color receptive fields. , 1978, Journal of neurophysiology.

[19]  D. Mackay,et al.  Multiple Orientation-Contingent Chromatic After-Effects* , 1977, The Quarterly journal of experimental psychology.

[20]  Trichur Raman Vidyasagar.  Orientation specific colour adaptation at a binocular site , 1976, Nature.

[21]  Stephen R. Ellis,et al.  Orientation constancy of the McCollough effect , 1976 .

[22]  D. Holding,et al.  Extremely long-term persistence of the McCollough effect. , 1975, Journal of experimental psychology. Human perception and performance.

[23]  D Skowbo,et al.  McCollough effects: experimental findings and theoretical accounts. , 1975, Psychological bulletin.

[24]  S. Appelle.  Perception and discrimination as a function of stimulus orientation: the "oblique effect" in man and animals. , 1972, Psychological bulletin.

[25]  C F Stromeyer,et al.  Contour-contingent color aftereffects: retinal area specificity. , 1972, The American journal of psychology.

[26]  R. Over,et al.  Color Adaptation of Spatial Frequency Detectors in the Human Visual System , 1972, Science.

[27]  G. Murch.  Binocular relationships in a size and color orientation specific aftereffect. , 1972, Journal of experimental psychology.

[28]  P. Frank,et al.  Boston Studies in the Philosophy of Science , 1968 .

[29]  C. McCollough.  Color Adaptation of Edge-Detectors in the Human Visual System , 1965, Science.

[30]  P. Dodwell,et al.  A functional theory of the McCollough effect. , 1990, Psychological review.

[31]  R H Day,et al.  Orientation-contingent color aftereffects are determined by real color, not induced color , 1988, Perception & psychophysics.

[32]  C. F. Stromeyer,et al.  Form-Color Aftereffects in Human Vision , 1978 .

[33]  R. Efron,et al.  What is Perception , 1969 .

[34]  D. Benson,et al.  Visual form agnosia. A specific defect in visual discrimination. , 1969, Archives of neurology.

[35]  D. Hubel,et al.  Receptive fields, binocular interaction and functional architecture in the cat's visual cortex , 1962, The Journal of physiology.