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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 64, Iss. 9 — Sep. 1, 1974
  • pp: 1256–1262

Electroretinogram and visually evoked potential associated with paced saccadic displacement of the stimulus

Lois E. Flamm  »View Author Affiliations

JOSA, Vol. 64, Issue 9, pp. 1256-1262 (1974)

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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.

Lois E. Flamm, "Electroretinogram and visually evoked potential associated with paced saccadic displacement of the stimulus," J. Opt. Soc. Am. 64, 1256-1262 (1974)

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