Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-13T06:07:49.835Z Has data issue: false hasContentIssue false
  • English
  • Français

Influence of motion on chromatic detection

Published online by Cambridge University Press:  05 April 2005

PATRICK MONNIER  and
STEVEN K. SHEVELL
PATRICK MONNIER
Affiliation:
Departments of Psychology, and Ophthalmology and Visual Science, University of Chicago, Chicago
STEVEN K. SHEVELL
Affiliation:
Departments of Psychology, and Ophthalmology and Visual Science, University of Chicago, Chicago
Get access Rights & Permissions [Opens in a new window]

Abstract

Intense scrutiny has been focused on whether chromatic stimuli contribute to motion perception. The present study considers a related but different question: how does motion affect chromatic detection? Detection thresholds were measured for a disk that underwent a brief (13.3 ms) chromatic change in the L/(L+M) chromatic direction. The disk's presentation sequence and speed (0–16 deg/s) were manipulated. In the coherent presentation sequence, the disk moved smoothly along a circular path centered on the fixation point. In the random presentation sequence, the disk appeared randomly at positions along the circular path. In both types of sequences, the disk underwent a brief chromatic change midway through the temporal presentation sequence. Threshold was elevated in the coherent condition compared to the random condition, and threshold decreased with an increase in speed. The threshold elevation observed in the coherent presentation sequence can be accounted for by temporal integration. The decrease in threshold with an increase in speed can be accounted for by spatial integration. The results, therefore, can be explained by spatiotemporal integration, without invoking a neural mechanism specialized for motion.

Keywords

Motion perceptionChromatic detection
Type
Research Article
Information
Visual Neuroscience , Volume 21 , Issue 3 , May 2004 , pp. 327 - 330
Copyright
© 2004 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Anstis, S. & Cavanagh, P. (1983). A minimum motion technique for judging equiluminance. In Colour Vision Physiology and Psychophysics, ed. Mollon, J.D. & Sharpe, L.T., pp. 155–166. London, UK: Academic Press.
Cavanagh, P. & Anstis, S. (1991). The contribution of color to motion in normal and color-deficient observers. Vision Research 31, 2109–2148.Google Scholar
Cavanagh, P., Tyler, C.W., & Favreau, O.E. (1984). Perceived velocity of moving chromatic gratings. Journal of the Optical Society of America A 1, 893–899.Google Scholar
Cole, G.R., Stromeyer, C.F., III, & Kronauer, R.E. (1990). Visual interactions with luminance and chromatic stimuli. Journal of the Optical Society of America A 7, 128–140.Google Scholar
Culham, J.C. & Cavanagh, P. (1994). Motion capture of luminance stimuli by equiluminous color gratings and by attentive tracking. Vision Research 34, 2701–2706.Google Scholar
Dobkins, K.R. & Albright, T.D. (1993). What happens if it changes color when it moves?: Psychophysical experiments on the nature of chromatic input to motion detectors. Vision Research 33, 1019–1036.Google Scholar
Eskew, R.T., Jr., Stromeyer, C.F., III, & Kronauer, R.E. (1994). The time-course of chromatic facilitation by luminance contours. Vision Research 34, 3139–3144.Google Scholar
Gegenfurtner, K. & Hawken, M.J. (1996). Temporal and chromatic properties of motion mechanisms. Vision Research 35, 1547–1563.Google Scholar
Livingstone, M.S. & Hubel, D.H. (1987). Psychophysical evidence for separate channels for the perception of form, color, motion and depth. Journal of Neuroscience 7, 3416–3468.Google Scholar
Lu, Z.L., Lesmes, L.A., & Sperling, G. (1999). The mechanism of isoluminant chromatic motion perception. Proceedings of the National Academy of Sciences of the U.S.A. 96, 8289–8294.Google Scholar
MacLeod, D.I.A. & Boynton, R.M. (1979). Chromaticity diagram showing cone excitation by stimuli of equal luminance. Journal of the Optical Society of America 69, 1183–1185.Google Scholar
Ramachandran, V.S. & Gregory, R.L. (1978). Does colour provide an input to human motion perception. Nature 275, 55–57.Google Scholar
Stromeyer, C.F., Chaparro, A., Rodriguez, C., Chen, D., Hu, E., & Kronauer, R.E. (1998). Short-wave cone signal in the green detection mechanism. Vision Research 38, 813–826.Google Scholar
Tansley, B.W. & Boynton, R.M. (1978). Chromatic border perception: The role of red- and green-sensitive cones. Vision Research 18, 683–697.Google Scholar
Thiele, A., Dobkins, K.R., & Albright, T.D. (2001). Neural correlates of chromatic motion perception. Neuron 32, 351–358.Google Scholar