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Perceived velocity of moving chromatic gratings
Abstract
Equiluminous red-green sine-wave gratings were drifted at a uniform rate in the bottom half of a 10-deg field. In the top half of the display was a sinusoidal-luminance grating of the same spatial frequency and 95% contrast that drifted in the opposite direction. Observers, while fixating a point in the display center, adjusted the speed of this upper comparison grating so that it appeared to match the velocity of the chromatic grating below. At low spatial frequencies, equiluminous gratings were appreciably slowed and sometimes stopped even though the individual bars of the grating could be easily resolved. The amount of slowing was proportionally greatest for gratings with slow drift rates. Blue-yellow sine-wave gratings showed similar effects. When luminance contrast was held constant, increasing chrominance modulation caused further decreases in apparent velocity, ruling out the possibility that the slowing was simply due to decreased luminance contrast. Perceived velocity appears to be a weighted average of luminance and chrominance velocity information.
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Citations
Cited by
Segregation of Form, Color, Movement, and Depth: Anatomy, Physiology, and Perception
Livingstone, M., & Hubel, D. (1988) · Science · doi:10.1126/science.3283936 · Cited by 3,355
Psychophysical evidence for separate channels for the perception of form, color, movement, and depth
Livingstone, M., & Hubel, D. (1987) · The Journal of Neuroscience · doi:10.1523/jneurosci.07-11-03416.1987 · Cited by 1,758
Boussaoud, D., Ungerleider, L. G., & Desimone, R. (1990) · Journal of Comparative Neurology · doi:10.1002/cne.902960311 · Cited by 634
Attention-Based Motion Perception
Cavanagh, P. (1992) · Science · doi:10.1126/science.1523411 · Cited by 477
Self-citationSensitivity of macaque retinal ganglion cells to chromatic and luminance flicker.
Lee, B. B., Martin, P. R., & Valberg, A. (1989) · The Journal of Physiology · doi:10.1113/jphysiol.1989.sp017685 · Cited by 310
Metadata
- Authors
- Cavanagh, P., Tyler, C. W., & Favreau, O. E.
- Venue
- Journal of the Optical Society of America A
- Publisher
- Optica Publishing Group
- Published
- 1984-08-01
- Volume
- 1
- Issue
- 8
- Pages
- 893
- ISSN
- 1084-7529 (ISSN-L)
- 1520-8532
- OpenAlex
- W1988865938
- Cited by
- 391
- References
- 0
- FWCI
- 3.24
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Perceived velocity of moving chromatic gratings. https://app.cochat.ai/papers/10.1364/josaa.1.000893
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- Cavanagh, P., Tyler, C. W., & Favreau, O. E. (1984). Perceived velocity of moving chromatic gratings. Journal of the Optical Society of America A. https://doi.org/10.1364/josaa.1.000893
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