Abstract
Mainly because of the topography of the visual cortex, the VECPs reflect to a large extent the function of the posterior pole (Van Lith & Henkes, 1970). This is not only the case for pattern evoked potentials, but also for luminance evoked potentials. Despite this, the latter give hardly any information about one of the main foveal functions, viz. the visual acuity. One of the reasons is that the evoked potentials are highly variable; another reason is that luminance evoked potentials and visual acuity represent two totally different functions, the former being a measure of light sensitivity whereas the latter also includes a contrast function. Cortical potentials evoked by a pattern stimulus represent both functions, luminance and contrast, in a variable relation depending on checksize and contrast between the checks.
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Van Lith, G., Van Marle, W., Vijfwinkel-Bruininga, S., Bartl, G. (1977). Visual Acuity and Checkerboard Potentials with Defocusing Lenses. In: Lawwill, T. (eds) ERG, VER and Psychophysics. Documenta Ophthalmologica, vol 13. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-1312-3_3
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DOI: https://doi.org/10.1007/978-94-010-1312-3_3
Publisher Name: Springer, Dordrecht
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