Specificity and selectivity of chromatic visual evoked potentials

A paper by Rabin et al. (1994) Vision Research, 34, 2657-2671, claimed that spatially extensive grating stimuli could be used to generate chromatic-specific visual evoked potentials from subjects assumed to have standard spectral sensitivity and tritanopic confusion lines. Here we demonstrate that s...

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Bibliographic Details
Published in:Vision research (Oxford) 1996-11, Vol.36 (21), p.3397-3401
Main Authors: KULIKOWSKI, J. J, ROBSON, A. G, MCKEEFRY, D. J
Format: Article
Language:English
Subjects:
Biological and medical sciences
Color Perception - physiology
Contrast Sensitivity - physiology
Evoked Potentials, Visual - physiology
Eye and associated structures. Visual pathways and centers. Vision
Fundamental and applied biological sciences. Psychology
Humans
Pattern Recognition, Visual - physiology
Psychophysics
Retinal Cone Photoreceptor Cells - physiology
Vertebrates: nervous system and sense organs
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Summary:A paper by Rabin et al. (1994) Vision Research, 34, 2657-2671, claimed that spatially extensive grating stimuli could be used to generate chromatic-specific visual evoked potentials from subjects assumed to have standard spectral sensitivity and tritanopic confusion lines. Here we demonstrate that such spatially extensive stimuli may generate responses which are contaminated by luminance-contrast intrusions. Such intrusions are mainly due to chromatic aberrations and are compounded by the abovementioned assumptions. Claims regarding the chromatic selectivity of VEPs must, therefore, be substantiated by establishing correlations with the known properties of the chromatic system.
ISSN:0042-6989
1878-5646
DOI:10.1016/0042-6989(96)00055-7