Cited by 1,076Visual perception and processing mechanismsMotor Control and AdaptationAdvanced Vision and Imaging

Motion illusions as optimal percepts

Weiss, Yair, Simoncelli, Eero P., Adelson, Edward H.·2002·Nature Neuroscience

Abstract

The pattern of local image velocities on the retina encodes important environmental information. Although humans are generally able to extract this information, they can easily be deceived into seeing incorrect velocities. We show that these 'illusions' arise naturally in a system that attempts to estimate local image velocity. We formulated a model of visual motion perception using standard estimation theory, under the assumptions that (i) there is noise in the initial measurements and (ii) slower motions are more likely to occur than faster ones. We found that specific instantiation of such a velocity estimator can account for a wide variety of psychophysical phenomena.

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Crossref · 10.1038/nn0602-858

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49 of 49 references verified0 citation errors · 0 not checkable

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  • Many motion illusions are not the result of sloppy computation but of a coherent computational strategy that is optimal under reasonable assumptions.

    “Many motion ' illusions ' are not the result of sloppy computation by various components in the visual system, but rather a result of a coherent computational strategy that is optimal under reasonable assumptions. (Weiss et al. 2002, p. 603)”
  • Similar results have been obtained for motion perception, accounting for various illusions of motion perception by invoking statistically valid priors that favor slower and smoother motions.

    “Similar results have been obtained for motion perception, neatly accounting for various illusions of motion perception by invoking statistically valid priors that favor slower and smoother motions -see Weiss et al. (2002) and Ernst (2010).”
  • Bayesian cognitive models optimally combine prior knowledge about the world with sensory evidence.

    “One success story is that of Bayesian cognitive models, which optimally combine prior knowledge about the world with sensory evidence21–23.”

    From Cognitive computational neuroscience (2018) · cites this paper as [23]

  • The reduced sensitivity of psychosis patients to perceptual illusions is inconsistent with the proposition that strong priors are at the root of perceptual illusions.

    “which is inconsistent with the proposition that strong priors would be at the root of perceptual illusions.141,142”
  • A whole range of illusory percepts, including idiosyncratic motion illusions, correspond to what an optimal Bayesian observer would perceive in similar conditions.

    “Importantly, several authors (Geisler and Kersten, 2002; Weiss et al., 2002) suggested that a whole range of illusory percepts, even those that are idiosyncratic in appearance (such as motion illusions), correspond to what an optimal Bayesian observer would perceive in similar conditions.”

    From What visual illusions teach us about schizophrenia (2014) · cites this paper as Weiss et al., 2002

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Authors
Weiss, Y., Simoncelli, E. P., & Adelson, E. H.
Affiliations
  • Hebrew University of Jerusalem (IL)
  • Howard Hughes Medical Institute (US)
  • Massachusetts Institute of Technology (US)
Corresponding author
Weiss, Yair
Venue
Nature Neuroscience
Published
2002-05-20
Volume
5
Issue
6
Pages
598-604
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2148596731
Cited by
1,076
References
49
Citations by year
2026: 33 · 2025: 48 · 2024: 42 · 2023: 31 · 2022: 38 · 2021: 52 · 2020: 43 · 2019: 59 · 2018: 55 · 2017: 57 · 2016: 44 · 2015: 50 · 2014: 65 · 2013: 59 · 2012: 51
FWCI
16.03
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01ey011005-05)
  • National Eye Institute (R01 EY11005)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Vision and Imaging
Keywords
illusory motion, visual motion perception, velocity estimation, Bayesian estimation, psychophysics, measurement noise
MeSH terms
Humans, Models, Neurological, Motion Perception, Optical Illusions, Time Factors, Contrast Sensitivity

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