Enhanced motion during gradual changes in luminance polarity

  • Stuart Anstis Department of Psychology, UC San Diego, La Jolla, CA, USA
Keywords: motion, reverse-phi, peripheral vision

Abstract

A pattern that gradually reverses its polarity as it moves can appear to move farther and faster than it really does. I shall call this new effect ‘enhanced motion’, since it accentuates the amplitude and briskness of motion as opposed to reverse phi, in which polarity changes reverse the perceived direction of a moving object.

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References


Anstis, S. (2001). Footsteps and inchworms: Illusions show that contrast affects apparent speed. Perception, 30(7), 785–794. doi: 10.1068/p3211


Anstis, S. M. (1967). Visual adaptation to gradual change of intensity. Science, 155(3763), 710–712. doi: 10.1126/science.155.3763.710


Anstis, S. M. (1970). Phi movement as a subtraction process. Vision Research, 10, 1411–1430. doi: 10.1016/0042-6989(70)90092-1


Anstis, S. M., & Rogers, B. J. (1975). Illusory reversal of visual depth and movement during changes of contrast. Vision Research, 15, 957–961. doi: 10.1016/0042-6989(75)90236-9


Baker, C. L., & Braddick, O. J. (1985). Eccentricity-dependent scaling of the limits for short-range apparent motion perception. Vision Research, 25(6), 803–812. doi: 10.1016/0042-6989(85)90188-9


Barlow, H. B. (1985). Cerebral cortex as a model builder. In V. D. D. Rose (Ed.), Models of the visual cortex (p. 37C46). New York: John Wiley.


Bours, R. J., Kroes, M. C., & Lankheet, M. J. (2009). Sensitivity for reverse-phi motion. Vision Research, 49(1), 1–9. doi: 10.1016/j.visres.2008.09.014


Edwards, M., & Nishida, S. (2004). Contrast-reversing global-motion stimuli reveal local interactions between first- and second-order motion signals. Vision Research, 44(16), 1941–1950. doi: 10.1016/j.visres.2004.03.016


Julesz, B. (1970). Foundations of cyclopean perception. Chicago: University of Chicago Press.


Kirkels, L. A. M. H., Zhang, W., Duijenhouwer, J., & van Wezel, R. J. A. (2020). Opto-locomotor reflexes of mice to reverse-phi stimuli. Journal of Vision, 20, 7. doi: 10.1167/jov.20.2.7


Kitaoka, A. (2006). Configurational coincidence among six different phenomena: A comment on van Lier and Csathó. Perception, 35, 799–806. doi: 10.1068/p5319b


Kitaoka, A., & Anstis, S. (2021). A review of the footsteps illusion. Journal of Illusion, 2(1), 5612. doi: 10.47691/joi.v2.5612


Lettvin, J. Y., Maturana, H. R., McCulloch, W. S., & Pitts, W. H. (1961). Two remarks on the visual system of the frog. In W. A. Rosenblith (Ed.), Sensory communication (pp. 757–776). Cambridge, MA: MIT Press. Retrieved from https://cepa.info/524


Lorenceau, J., & Cavanagh, P. (2020). Jumpy and jerky: When peripheral vision faces reverse-phi. i-Perception, 11(5), 1–5. doi: 10.1177/2041669520939107


Mackay, D. M. (1958). Perceptual stability of a stroboscopically lit visual field containing self-luminous objects. Nature, 181(4607), 507–8. doi: 10.1038/181507a0


Mather, G., & Challinor, K. L. (2009). Psychophysical properties of two-stroke apparent motion. Journal of Vision, 9(1), 28, 1–6. doi: 10.1167/9.1.28


Morgan, M. J., & Chubb, C. (1999). Contrast facilitation in motion detection: Evidence for a Reichardt detector in human vision. Vision Research, 39(25), 4217–4231. doi: 10.1016/s0042-6989(99)00136-4


Reichardt, W. (1961). Autocorrelation: A principle for the evaluation of sensory evidence by the central nervous system. In W. Rosenblith (Ed.), Sensory communication (pp. 303–318). Cambridge, MA: MIT Press.


Rogers, B. J., Anstis, S., Ashida, H., & Kitaoka, A. (2019). Reversed phi and the ‘Phenomenal Phenomena’ revisited. I-Perception, 10, 4. doi: 10.1177/2041669519856906


Schiller, P. H. (1992). The ON and OFF channels of the visual system. Trends in Neurosciences, 15(3), 86–92. doi: 10.1016/0166-2236(92)90017-3


Shapiro, A. G., & Todorovich, D. (2017). Introduction, Figure 2. In A. G. Shapiro & D. Todorovich (Eds.), The Oxford compendium of visual illusions. Oxford: Oxford University Press.


Shioiri, S., & Cavanagh, P. (1990). ISI produces reverse apparent motion. Vision Research, 30(5), 757–768. doi: 10.1016/0042-6989(90)90101-p


Thompson. P. (1982). Perceived rate of movement depends on contrast. Vision Research, 22, 377–380. doi: 10.1016/0042-6989(82)90153-5
Published
2021-04-15
How to Cite
Anstis S. (2021). Enhanced motion during gradual changes in luminance polarity. Journal of Illusion, 2. https://doi.org/10.47691/joi.v2.5594
Section
Phenomenal reports