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Achromatic luminance contrast sensitivity in X-linked color-deficient observers: An addition to the debate

Published online by Cambridge University Press:  08 October 2013

MÁRTA JANÁKY ,
JUDIT BORBÉLY ,
GYÖRGY BENEDEK ,
BALÁZS PÉTER KOCSIS  and
GÁBOR BRAUNITZER
MÁRTA JANÁKY
Affiliation:
Department of Ophthalmology, Faculty of Medicine, University of Szeged, 6720 Szeged, Hungary
JUDIT BORBÉLY
Affiliation:
Department of Conservative Dentistry, Faculty of Dentistry, Semmelweis University, 1088 Budapest, Hungary
GYÖRGY BENEDEK
Affiliation:
Department of Physiology, Faculty of Medicine, University of Szeged, 6720 Szeged, Hungary
BALÁZS PÉTER KOCSIS
Affiliation:
Department of Ophthalmology, Faculty of Medicine, University of Szeged, 6720 Szeged, Hungary
GÁBOR BRAUNITZER*
Affiliation:
Department of Physiology, Faculty of Medicine, University of Szeged, 6720 Szeged, Hungary
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Abstract

It is a matter of debate whether X-linked dichromacy is accompanied by enhanced achromatic processing. In the present study, we used sinusoidally modulated achromatic gratings under photopic conditions to compare the contrast sensitivity (CS) of protanopes, deuteranopes, and normal trichromats. 36 male volunteers were examined. CS was tested in static and dynamic conditions at nine different spatial frequencies. The results support the assumption that X-linked color-defective observers are at an advantage in terms of achromatic processing. Both protanopes and deuteranopes had significantly better CS than controls in both the static and the dynamic conditions. In the static condition, the advantage was observed especially at higher spatial frequencies, whereas in the dynamic condition, it was seen also at lower frequencies. The results are interpreted in terms of decreased chromatic modulation of the luminance channel and the early plasticity of the parvocellular system.

Keywords

PsychophysicsColor visionDichromacyContract sensitivityPlasticity
Type
Brief Communication
Information
Visual Neuroscience , Volume 31 , Issue 1 , January 2014 , pp. 99 - 103
Copyright
Copyright © Cambridge University Press 2013 

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References

American Academy of Ophthalmology. (2010). Preferred Practice pattern Guidelines. Comprehensive Adult Medical Eye Evaluation. San Francisco, CA: American Academy of Ophthalmology.Google Scholar
Benardete, E.A. & Kaplan, E. (1999). Dynamics of primate P retinal ganglion cells: Responses to chromatic and achromatic stimuli. The Journal of Physiology 519, 775–790.Google Scholar
Benedek, K., Janaky, M., Braunitzer, G., Rokszin, A., Keri, S. & Benedek, G. (2010). Parallel development of contour integration and visual contrast sensitivity at low spatial frequencies. Neuroscience Letter 472, 175–178.Google Scholar
Berendschot, T.T., van de Kraats, J. & van Norren, D. (1996). Foveal cone mosaic and visual pigment density in dichromats. The Journal of Physiology 492, 307–414.Google Scholar
Blakemore, C. & Cooper, G.F. (1970). Development of the brain depends on the visual environment. Nature 228, 477–478.Google Scholar
Carroll, J., Neitz, M., Hofer, H., Neitz, J. & Williams, D.R. (2004). Functional photoreceptor loss revealed with adaptive optics: An alternate cause of color blindness. Proceedings of the National Academy of Sciences of the United States of America 101, 8461–8466.Google Scholar
Forte, J.D., Blessing, E.M., Buzas, P. & Martin, P.R. (2006). Contribution of chromatic aberrations to color signals in the primate visual system. Journal of Vision 6, 97–105.Google Scholar
Gouras, P. (2013). Color Vision. http://webvision.med.utah.edu/book/part-vii-color-vision/color-vision/ . Accessed on June 10, 2013.Google Scholar
Hofer, H., Carroll, J., Neitz, J., Neitz, M. & Williams, D.R. (2005). Organization of the human trichromatic cone mosaic. The Journal of Neuroscience 25, 9669–9679.CrossRefGoogle ScholarPubMed
Jägle, H., de Luca, E., Serey, L., Bach, M. & Sharpe, L.T. (2006). Visual acuity and X-linked color blindness. Graefe’s Archive for Clinical and Experimental Ophthalmology 244, 447–453.Google Scholar
Kremers, J., Usui, T., Scholl, H.P. & Sharpe, L.T. (1999). Cone signal contributions to electroretinograms [correction of electrograms] in dichromats and trichromats. Investigative Ophthalmology & Visual Science 40, 920–930.Google ScholarPubMed
Lutze, M., Pokorny, J. & Smith, V.C. (2006). Achromatic parvocellular contrast gain in normal and color defective observers: Implications for the evolution of color vision. Visual Neuroscience 23, 611–616.Google Scholar
Morgan, M.J., Adam, A. & Mollon, J.D. (1992). Dichromats detect colour-camouflaged objects that are not detected by trichromats. Proceedings. Biological sciences/The Royal Society 248, 291–295.Google Scholar
Murdoch, I.E., Morris, S.S. & Cousens, S.N. (1998). People and eyes: Statistical approaches in ophthalmology. British Journal of Ophthalmology 82, 971–973.Google Scholar
Nathans, J., Piantanida, T.P., Eddy, R.L., Shows, T.B. & Hogness, D.S. (1986). Molecular genetics of inherited variation in human color vision. Science 232, 203–210.Google Scholar
Pokorny, J. (2011). Review: Steady and pulsed pedestals, the how and why of post-receptoral pathway separation. Journal of Vision 11, 1–23.Google Scholar
Rodman, H.R., Scalaidhe, S.P. & Gross, C.G. (1993). Response properties of neurons in temporal cortical visual areas of infant monkeys. Journal of Neurophysiology 70, 1115–1136.CrossRefGoogle ScholarPubMed
Sharpe, L.T., de Luca, E., Hansen, T., Jagle, H. & Gegenfurtner, K.R. (2006). Advantages and disadvantages of human dichromacy. Journal of Vision 6, 213–223.CrossRefGoogle ScholarPubMed
Simunovic, M.P. (2010). Colour vision deficiency. Eye (London, England) 24, 747–755.Google Scholar
Solomon, S.G. & Lennie, P. (2007). The machinery of colour vision. Nature Reviews. Neuroscience 8, 276–286.Google Scholar