Monocular and dichoptic masking effects on the frequency doubling illusion

The purpose of this paper was to investigate the effects of both monocular and dichoptic masking on the frequency doubling (FD) illusion, using both temporal and spatial masks. Monocular spatial tuning effects occurred around the fundamental FD spatial frequency of 0.25 cycles per degree (c/deg), wh...

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Bibliographic Details
Published in:Vision research (Oxford) 2004-03, Vol.44 (7), p.661-667
Main Authors: Quaid, P.T., Simpson, T., Flanagan, J.G.
Format: Article
Language:English
Subjects:
Adult
Analysis of Variance
Biological and medical sciences
Female
Flicker Fusion
Frequency doubling
Fundamental and applied biological sciences. Psychology
Humans
Illusion
Male
Masking
Optical Illusions
Perception
Perceptual Masking - physiology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychophysics
Vision
Visual Perception - physiology
Y-cell
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Summary:The purpose of this paper was to investigate the effects of both monocular and dichoptic masking on the frequency doubling (FD) illusion, using both temporal and spatial masks. Monocular spatial tuning effects occurred around the fundamental FD spatial frequency of 0.25 cycles per degree (c/deg), whereas dichoptic spatial frequency tuning effects occurred at the doubled spatial frequency of 0.50 c/deg. Temporal tuning effects were observed at the FD temporal frequency of 25 Hz, in both monocular and dichoptic paradigms. These results suggest that the FD illusion is cortical in origin and is dominated by a flicker component.
ISSN:0042-6989
1878-5646
DOI:10.1016/j.visres.2003.10.013