11 pags., 4 figs., 1 tab. -- Open Access funded by Creative Commons Atribution Licence 4.0 ; Monovision is a common prescription lens correction for presbyopia [1]. Each eye is corrected for a different distance, causing one image to be blurrier than the other. Millions of people have monovision corrections, but little is known about how interocular blur differences affect motion perception. Here, we report that blur differences cause a previously unknown motion illusion that makes people dramatically misperceive the distance and three-dimensional direction of moving objects. The effect occurs because the blurry and sharp images are processed at different speeds. For moving objects, the mismatch in processing speed causes a neural disparity, which results in the misperceptions. A variant of a 100-year-old stereo-motion phenomenon called the Pulfrich effect [2], the illusion poses an apparent paradox: blur reduces contrast, and contrast reductions are known to cause neural processing delays [3–6], but our results indicate that blurry images are processed milliseconds more quickly. We resolve the paradox with known properties of the early visual system, show that the misperceptions can be severe enough to impact public safety, and demonstrate that the misperceptions can be eliminated with novel combinations of non-invasive ophthalmic interventions. The fact that substantial perceptual errors are caused by millisecond differences in processing speed highlights the exquisite temporal calibration required for accurate perceptual estimation. The motion illusion—the reverse Pulfrich effect—and the paradigm we use to measure it should help reveal how optical and image properties impact temporal processing, an important but understudied issue in vision and visual neuroscience. Burge et al. show that the interocular blur differences caused by a common prescription lens correction can cause dramatic misperceptions of motion. The illusions may impact public safety. The authors explain the illusion and demonstrate that appropriate combination of non-invasive ophthalmic interventions can eliminate the illusion. ; This work was supported by NIH grant R01-EY028571 from the National Eye Institute and the Office of Social and Behavioral Science to J.B., startup funds from the University of Pennsylvania to J.B., Spanish Ministry of Education grant FPU17/02760 to V.R.L., and Spanish Ministry of Science, Innovation, and Universities grants ISCIII DTS2016/00127 and FIS2017-84753-R to C.D.
Monovision and the Misperception of Motion
2019-07-25
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC: | 629 |
Die Auswirkungen der Monovision-Korrektion auf die fahrerische Leistung
Tema Archiv | 1999
|Misperception of motion in depth originates from an incomplete transformation of retinal signals.
BASE | 2019
|Operational Effects of Drivers’ Misperception of Horizontal Curvature
Online Contents | 2012
|