Abstract

Two subjects made saccadic eye movements of specified distance horizontally across the central opaque stripe in circular patterns of vertically oriented stripes that differed in area or spatial frequency. Electroretinograms (ERG’s) and visually evoked cortical potentials (VECP’s) associated with these pattern displacements were recorded simultaneously. When the subject moved his eye (i) through either a fraction of a stripe width in a fixed-stimulus configuration or (ii) a complete stripe width across stimuli of various diameters, ERG amplitude increased linearly with the number of visual cells activated. When illuminance changes over equal numbers of receptors were produced by (iii) having the subject make full-stripe saccades in fixed-diameter gratings of various spatial frequencies, the resulting ERG’s were of approximately equal size. VECP’s showed monotonic increases of amplitude with increasing saccade size and area of stimulation. Cortical responses were greatest at gratings of 2.3 cycles/deg for both subjects. The spatial frequencies of 0.47 and 3.6 cycles/deg were less effective.

© 1974 Optical Society of America

Relations between the amplitudes of spontaneous saccades and visual responses*

John C. Armington and Marie B. Bloom
J. Opt. Soc. Am. 64(9) 1263-1271 (1974)

Simultaneously Recorded Retinal and Cortical Responses to Patterned Stimuli*

John C. Armington, Thomas R. Corwin, and Robert Marsetta
J. Opt. Soc. Am. 61(11) 1514-1521 (1971)

Variation of Spontaneous Ocular and Occipital Responses with Stimulus Patterns*†

John C. Armington, Kenneth Gaarder, and Amy M. L. Schick
J. Opt. Soc. Am. 57(12) 1534-1538 (1967)

Effects of photopic annulus luminance level on reaction time and on the latency of evoked cortical potential responses to target flashes

Alan J. Wilson and Alfred Lit
J. Opt. Soc. Am. 71(12) 1481-1486 (1981)

Summation of Retinal Potentials

John C. Armington, Donald I. Tepas, Walter J. Kropfl, and Werner H. Hengst
J. Opt. Soc. Am. 51(8) 877-886 (1961)