PMID: 3750875Jan 1, 1986Paper

Spatial extent of rod-cone and cone-cone interactions for flicker detection

Vision Research
N J Coletta, A J Adams

Abstract

Over a large range of light adaptation levels, sensitivity to 25 Hz flicker improves as the light level of the background increases. Using small background discs and annular surrounds, this effect was shown to be mediated by the surround and not the average luminance of the test region, in agreement with recent reports. The effect is due to two types of lateral interaction: at mesopic light levels (from 0.1 to 1.0 td), cone-mediated flicker resolution is enhanced by the stimulation of surrounding rods; at photopic light levels (above 10 td), flicker sensitivity improves with light stimulation of adjacent cones. The spatial zone, or extent, over which the surround contributes to the flicker threshold was measured. The spatial area over which rods influence the cone 25 Hz flicker threshold is larger than the analogous spatial area of cone influence. In the parafovea, at 5 deg eccentricity, cone flicker sensitivity for a 20' spot is influenced by cones in a 1 deg diameter area centered on the spot; the corresponding area of rod influence is about 3 deg. In the fovea, flicker sensitivity for a 10' spot is influenced by cone stimulation in an area of about 20' diameter. Rods which affect foveal flicker sensitivity appear to occupy a...Continue Reading

References

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Citations

Jan 1, 1990·Vision Research·N S PeacheyD J Derlacki
Jan 1, 1993·Vision Research·B Stabell, U Stabell
Mar 21, 2009·Survey of Ophthalmology·Kumari NeelamStephen Beatty
Jan 1, 1988·Vision Research·F NaarendorpT E Frumkes
Aug 3, 2001·Vision Research·A J Anderson, A J Vingrys
May 9, 2002·Vision Research·Andrew John Anderson, Algis Jonas Vingrys
Sep 11, 2007·Vision Research·Andrew J Zele, Algis J Vingrys
Jun 15, 1988·American Journal of Ophthalmology·G B ArdenA C Bird
Aug 6, 1998·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·A EisnerJ A Middleton
Jan 5, 2002·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·A Eisner
Jan 1, 1994·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·A Eisner
Feb 1, 1995·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·A Eisner
Nov 1, 1992·Journal of the Optical Society of America. A, Optics and Image Science·R D Hamer, C W Tyler
Oct 1, 1995·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·A EisnerG A Cioffi
Sep 18, 1997·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·A Reeves, S Wu

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