Two fields of random dots that were identical except for a slight shift in a central square region were presented in rapid alternation. This produced a vivid impression of a square moving back and forth above the background. When the kinematogram is presented in equiluminous red/green, the motion of the central region can still be seen, although over a narrower range of alternation rates, interstimulus intervals, and displacements than for black/white presentation. The perception of motion for equiluminous stimuli indicates that colour and motion can be analyzed conjointly by the visual system. However, as originally reported by Ramachandran and Gregory, the segregation of the oscillating central square from the background is lost at equiluminance. This segregation process therefore appears to be colour-blind.
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References
1.
AnstisS M, 1970“Phi movement as a subtraction process”Vision Research101411–1430.
2.
AnstisS MCavanaghP, 1983“A minimum motion technique for judging equiluminance” in Color Vision: Physiology and Psychophysics Eds MollonJ DSharpeL T, (London: Academic Press) pp 155–166.
3.
BowenR WPokornyJCacciatoD, 1977“Metacontrast masking depends on luminance transients”Vision Research17971–975.
4.
BraddickO, 1974“A short-range process in apparent motion”Vision Research14519–528.
5.
CavanaghPTylerC WFavreauO E, 1983“Perceived velocity of moving chromatic gratings”Journal of the Optical Society of AmericaA1893–899.
6.
ChangJ JJuleszB, 1983a“Displacement limits, directional anisotropy and directional versus form discrimination in random-dot cinematograms”Vision Research23639–646.
7.
ChangJ JJuleszB, 1983b“Displacement limits for spatial frequency filtered random-dot cinematograms in apparent motion”Vision Research231379–1386.
8.
ElsnerA, 1978“Hue difference contours can be used in processing orientation information”Perception & Psychophysics24451–456.
9.
FavreauO E, 1976“Interference in colour-contingent motion aftereffects”Quarterly Journal of Experimental Psychology28553–560.
10.
FavreauO ECavanaghP, 1981“Color and luminance: Independent frequency shifts”Science212831–832.
11.
FavreauO EEmersonV FCorballisM C, 1972“Motion perception: A color-contingent aftereffect”Science17678–79.
12.
GourasPKrugerJ, 1979“Responses of cells in foveal visual cortex of the monkey to pure color contrast”Journal of Neurophysiology42850–860.
13.
GregoryR L, 1977“Vision with isoluminant colour contrast: 1. A projection technique and observations”Perception6113–119.
14.
GuthS LLodgeH R, 1973“Heterochromatic additivity, foveal spectral sensitivity, and a new color model”Journal of the Optical Society of America63450–462.
15.
HeringE, 1878Zur Lehre vom Lichtsinne (Wien: Karl Gerolds Sohn).
16.
HurvichL MJamesonD, 1957“An opponent-process theory of color vision”Psychological Review64384–404.
17.
InglingC RJr, 1978“Luminance and opponent color contributions to visual detection and to temporal and spatial integration: Comment”Journal of the Optical Society of America681143–1147.
18.
JuleszB, 1971Foundations of Cyclopean Perception (Chicago: University of Chicago Press).
19.
King-SmithP ECardenD, 1976“Luminance and opponent-color contributions to visual detection and adaptation and to temporal and spatial integration”Journal of the Optical Society of America66709–717.
20.
LappinJ SBellH H, 1976“The detection of coherence in moving random-dot patterns”Vision Research16161–168.
21.
LovegroveWOverRBroerseJ, 1972“Color sensitivity in motion aftereffects”Nature (London)238334–335.
22.
LuCFenderD H, 1972“The interaction of color and luminance in stereoscopic vision”Investigative Ophthalmology11482–489.
23.
MayhewJ E WAnstisS M, 1972“Movement aftereffects contingent on color, intensity, and pattern”Perception & Psychophysics1277–85.
24.
MichaelC R, 1978“Color sensitive complex cells in monkey striate cortex”Journal of Neurophysiology411250–1266.
25.
MikaelianH H, 1980“Effective luminance contrast as a parameter in contingent aftereffects”Perception & Psychophysics21531–536.
26.
RamachandranV SGregoryR L, 1978“Does colour provide an input to human motion perception?”Nature (London)27555–56.
27.
StromeyerC FIIIDawsonB M, 1978“Form–colour aftereffects: Selectivity to local luminance contrast”Perception7407–415.
28.
StromeyerC FIIIMansfieldR J W, 1970“Colored aftereffects produced with moving edges”Perception & Psychophysics7108–114.
29.
TylerC W, 1973“Temporal characteristics in apparent movement: Omega movement vs phi movement”Quarterly Journal of Experimental Psychology25182–192.
30.
De WeertC M, 1979“Colour contours and stereopsis”Vision Research19555–564.
31.
YujiriAEjimaYAlitaHNoguchiT, 1980“Spatial frequency selectivity of human color vision mechanism”Investigative Ophthalmology and Visual Science, Supplement19217.
32.
ZekiS M, 1973“Colour coding in rhesus monkey prestriate cortex”Brain Research3419–35.
