Apparent speed of type I symmetrical plaids

Vision Research
E Castet, M J Morgan

Abstract

The apparent speed of plaids made up of two gratings having the same spatial frequency and the same speed was evaluated (symmetrical type I). The plaids were moving vertically as defined by the intersection-of-constraints (IOC) rule with a mean duration of 300 msec. The comparison-stimulus was a horizontal line moving vertically. The main goal of the study was to test the effect of the spatial frequency of the Distortion Product (DP). Here the DP velocity is identical to the IOC velocity. The main effect is that reducing the DP spatial frequency from 4 to 1 c/deg decreases apparent speed. A smaller effect is due to the speed of the components: when this speed becomes relatively smaller than the IOC speed, apparent speed of the plaid decreases. Finally, the DP temporal frequency seems to determine the upper limit (about 16 Hz) beyond which the plaid appears as a non-rigid moving and flickering pattern.

References

Jul 1, 1992·Visual Neuroscience·H R WilsonC Yo
Jul 1, 1991·Journal of the Optical Society of America. A, Optics and Image Science·A T Smith, G K Edgar
Jan 1, 1991·Vision Research·A T Smith, G K Edgar
Jan 1, 1991·Vision Research·V P Ferrera, H R Wilson
Jan 1, 1987·Vision Research·V P Ferrera, H R Wilson
Jan 1, 1985·Vision Research·S J Anderson, D C Burr
Feb 1, 1971·The Journal of the Acoustical Society of America·H Levitt
Jan 1, 1984·Vision Research·M B Mandler, W Makous
Dec 9, 1982·Nature·E H Adelson, J A Movshon
Jul 1, 1980·Perception & Psychophysics·W Jesteadt
May 1, 1995·Vision Research·E Castet
Jul 1, 1994·Vision Research·H R Wilson, J Kim
Jul 1, 1993·Vision Research·H R Wilson, R Mast
May 1, 1965·The British Journal of Mathematical and Statistical Psychology·G B WETHERILL, H LEVITT

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Citations

Jul 13, 2001·Vision Research·K Langley
Apr 27, 2010·Vision Research·Linda Bowns, Alexander J S Beckett
Mar 3, 2007·Neuron·Xin HuangGene R Stoner
Jan 1, 1997·Perception·M J Wright, K N Gurney

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