Capture of visual direction in dynamic vergence is reduced with flashed monocular lines

Vision Research
Wolfgang JaschinskiMichael Schürer

Abstract

The visual direction of a continuously presented monocular object is captured by the visual direction of a closely adjacent binocular object, which questions the reliability of nonius lines for measuring vergence. This was shown by Erkelens, C. J., and van Ee, R. (1997a,b) [Capture of the visual direction: An unexpected phenomenon in binocular vision. Vision Research, 37, 1193-1196; Capture of the visual direction of monocular objects by adjacent binocular objects. Vision Research, 37, 1735-1745] stimulating dynamic vergence by a counter phase oscillation of two square random-dot patterns (one to each eye) that contained a smaller central dot-free gap (of variable width) with a vertical monocular line oscillating in phase with the random-dot pattern of the respective eye; subjects adjusted the motion-amplitude of the line until it was perceived as (nearly) stationary. With a continuously presented monocular line, we replicated capture of visual direction provided the dot-free gap was narrow: the adjusted motion-amplitude of the line was similar as the motion-amplitude of the random-dot pattern, although large vergence errors occurred. However, when we flashed the line for 67 ms at the moments of maximal and minimal disparity of...Continue Reading

References

Sep 1, 1996·Vision Research·H A MallotP A Arndt
May 1, 1997·Vision Research·C J Erkelens, R van Ee
Apr 16, 1998·Vision Research·A V PoppleJ M Findlay
Jul 6, 2000·Optometry and Vision Science : Official Publication of the American Academy of Optometry·M T Ukwade
Jun 20, 2001·Vision Research·P Fredenburg, R S Harwerth
Aug 19, 2004·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Wolfgang Jaschinski
Dec 1, 2005·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Wolfgang JaschinskiJulia Buchholz

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Citations

Jan 24, 2007·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Wolfgang JaschinskiNina Walper
Feb 18, 2014·Current Biology : CB·Stephanie JaintaSimon P Liversedge
Oct 26, 2007·Vision Research·S JaintaW Jaschinski

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