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An Electrodiagnostic Index of Macular Degeneration: Use of a Checkerboard Pattern Stimulus

An Electrodiagnostic Index of Macular Degeneration: Use of a Checkerboard Pattern Stimulus Abstract Electrical signals from the retina and the visual cortex were recorded using a checkerboard pattern stimulus. The signals obtained from normal subjects indicate that, at the retinal level, both macular and nonmacular cones contribute to the electroretinogram (ERG). At the cortex, however, only macular cones are responsible for the electrical signal. Records obtained from a patient with macular degeneration show the absence of a visually evoked cortical potential (VECP). References 1. Riggs LA, Johnson EP, Schick AML: Electrical responses of the human eye to moving stimulus patterns . Science 144:567, 1964.Crossref 2. Johnson EP, Riggs LA, Schick AML: Photic retinal potentials evoked by phase alteration of a barred pattern , in Burian HM, Jacobson JH (eds.): Clinical Electroretinography: Proceedings of the 3rd International Symposium . New York, Pergamon Press Inc, 1966, pp 75-91. 3. Armington J, Corwin TR, Marsetta R: Simultaneously recorded retinal and cortical responses to patterned stimuli . J Opt Soc Amer 61:1514-1521, 1971.Crossref 4. Millodot M, Riggs LA: Refraction determined electrophysiologically . Arch Ophthal 84:272-278, 1970.Crossref 5. Riggs LA: Continuous and reproducible records of the electrical activity of human retina . Proc Soc Exp Biol Med 48:204-207, 1941.Crossref 6. LeGrand Y: Light, Color and Vision . London, Chapman & Hall, 1957. 7. Armington J: The electroretinogram, the visual evoked potential, and the area-luminance relation . Vision Res 8:263-276, 1968.Crossref 8. Duke-Elder S: The anatomy of the visual system , in System of Opthalmology . London, Henry Kimpton, 1961, vol 2, pp 655-660. 9. Harter MR: Evoked cortical responses to checkerboard patterns: Effects of check-size as a function of retinal eccentricity . Vision Res 10:1365-1376, 1970.Crossref 10. Berson EL, Gouras P, Gunkel RD: Rod responses in retinitis pigmentosa dominantly inherited . Arch Ophthal 80:58-67, 1968.Crossref 11. Simonsen SE: ERG in diabetes , in Proceedings of the Fifth ISCERG Symposium . Basel, S Karger, 1968, pp 403-412. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Ophthalmology American Medical Association

An Electrodiagnostic Index of Macular Degeneration: Use of a Checkerboard Pattern Stimulus

Archives of Ophthalmology , Volume 88 (6) – Dec 1, 1972

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References (14)

Publisher
American Medical Association
Copyright
Copyright © 1972 American Medical Association. All Rights Reserved.
ISSN
0003-9950
eISSN
1538-3687
DOI
10.1001/archopht.1972.01000030621010
Publisher site
See Article on Publisher Site

Abstract

Abstract Electrical signals from the retina and the visual cortex were recorded using a checkerboard pattern stimulus. The signals obtained from normal subjects indicate that, at the retinal level, both macular and nonmacular cones contribute to the electroretinogram (ERG). At the cortex, however, only macular cones are responsible for the electrical signal. Records obtained from a patient with macular degeneration show the absence of a visually evoked cortical potential (VECP). References 1. Riggs LA, Johnson EP, Schick AML: Electrical responses of the human eye to moving stimulus patterns . Science 144:567, 1964.Crossref 2. Johnson EP, Riggs LA, Schick AML: Photic retinal potentials evoked by phase alteration of a barred pattern , in Burian HM, Jacobson JH (eds.): Clinical Electroretinography: Proceedings of the 3rd International Symposium . New York, Pergamon Press Inc, 1966, pp 75-91. 3. Armington J, Corwin TR, Marsetta R: Simultaneously recorded retinal and cortical responses to patterned stimuli . J Opt Soc Amer 61:1514-1521, 1971.Crossref 4. Millodot M, Riggs LA: Refraction determined electrophysiologically . Arch Ophthal 84:272-278, 1970.Crossref 5. Riggs LA: Continuous and reproducible records of the electrical activity of human retina . Proc Soc Exp Biol Med 48:204-207, 1941.Crossref 6. LeGrand Y: Light, Color and Vision . London, Chapman & Hall, 1957. 7. Armington J: The electroretinogram, the visual evoked potential, and the area-luminance relation . Vision Res 8:263-276, 1968.Crossref 8. Duke-Elder S: The anatomy of the visual system , in System of Opthalmology . London, Henry Kimpton, 1961, vol 2, pp 655-660. 9. Harter MR: Evoked cortical responses to checkerboard patterns: Effects of check-size as a function of retinal eccentricity . Vision Res 10:1365-1376, 1970.Crossref 10. Berson EL, Gouras P, Gunkel RD: Rod responses in retinitis pigmentosa dominantly inherited . Arch Ophthal 80:58-67, 1968.Crossref 11. Simonsen SE: ERG in diabetes , in Proceedings of the Fifth ISCERG Symposium . Basel, S Karger, 1968, pp 403-412.

Journal

Archives of OphthalmologyAmerican Medical Association

Published: Dec 1, 1972

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