Differentiation of VEP intermodulation and second harmonic components by dichoptic, monocular, and binocular stimulation

Visual Neuroscience
S SuterJ S Roessler

Abstract

Modulation by two temporal frequencies differentiates visual processing at the fundamentals (1Fs), second harmonics (2Fs), and second-order intermodulation components (IMCs), the latter created neurally as the sum or difference of the two modulation frequencies. Steady-state VEPs were recorded while stereo-normal adults viewed luminance or grating stimuli modulated by up to three temporal frequencies under dichoptic, monocular, or ordinary (binocular) viewing conditions arranged using liquid crystal light shutters. In Experiment 1, modulation of luminance by a single temporal frequency produced strong 1F and 2F VEP components, but modulation of gratings produced only 2Fs. Modulation by two temporal frequencies resulted in IMCs, often in the absence of evoked activity in the EEG at the 1Fs. IMCs were generally larger during pattern as compared to luminance modulation. Amplitudes of 1Fs and IMCs were smaller, but 2Fs were larger, during dichoptic as compared to ordinary viewing. Although the 2F to a single modulation presented to one eye was not reduced when a second frequency was added to the opposite eye, monocular IMCs were diminished when a frequency was added to the opposite eye. We conclude that 2Fs and IMCs are associated ...Continue Reading

References

Mar 1, 1977·Basic Research in Cardiology·H P Krayenbuehl
Jan 1, 1992·Vision Research·J R BrannanR L Storch
Nov 1, 1990·Documenta Ophthalmologica. Advances in Ophthalmology· Vaegan, E E Sutter
Jan 1, 1990·Vision Research·R D Freeman, I Ohzawa
Jan 1, 1990·Vision Research·S P McKeeS F Bowne
Jan 1, 1990·Annual Review of Psychology·R Shapley
Jan 1, 1988·Vision Research·L W Baitch, D M Levi
Jan 1, 1987·Vision Research·J MaierB W van Dijk
Nov 1, 1986·The Journal of Physiology·C Blakemore, F Vital-Durand
Sep 1, 1986·Journal of Neurophysiology·R F HessJ Schwarzer
Jun 1, 1985·The Journal of Physiology·F C RiemslagH F Verduyn Lunel
Jan 1, 1985·Vision Research·H SpekreijseD Regan
Apr 1, 1970·Kybernetik·H Spekreijse, H Oosting
Aug 1, 1984·Brain Research Bulletin·W R KlemmR G Allen
Jan 1, 1982·Annals of the New York Academy of Sciences·F Ratliff, V Zemon
Jan 1, 1982·Annals of the New York Academy of Sciences·H Spekreijse, D Reits
Sep 1, 1982·The Journal of Physiology·E Kaplan, R M Shapley
Jan 1, 1982·Vision Research·K Nakayama, M Mackeben
Mar 1, 1994·Vision Research·T B Lawton, C W Tyler
Nov 1, 1993·Vision Research·G Westheimer
Apr 1, 1993·Proceedings of the National Academy of Sciences of the United States of America·V ZemonJ Gordon
Dec 1, 1966·The Journal of Physiology·C Enroth-Cugell, J G Robson

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