Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Motion streaks provide a spatial code for motion direction.

W S Geisler1

  • 1Department of Psychology, University of Texas at Austin, 78712, USA. geisler@psy.utexas.edu

Nature
|July 14, 1999
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Image quality assessment based on a degradation model.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2008
Same author

Motion direction signals in the primary visual cortex of cat and monkey.

Visual neuroscience·2002
Same author

Edge co-occurrence in natural images predicts contour grouping performance.

Vision research·2001
Same author

Spikes versus BOLD: what does neuroimaging tell us about neuronal activity?

Nature neuroscience·2000
Same author

Visual cortex neurons in monkeys and cats: detection, discrimination, and identification.

Visual neuroscience·1997
Same author

Bayesian analysis of identification performance in monkey visual cortex: nonlinear mechanisms and stimulus certainty.

Vision research·1995
Same journal

Daily briefing: 'Cyborg' cockroaches breathe underwater with printed suit.

Nature·2026
Same journal

China boosts prestigious grants for young scientists - will it ease competition?

Nature·2026
Same journal

Incoming US science academy chief vows to 'double down' on research.

Nature·2026
Same journal

Author Correction: Synthesis of enantioenriched atropisomers by biocatalytic deracemization.

Nature·2026
Same journal

Electrodeposited self-assembled molecules for perovskite photovoltaics.

Nature·2026
Same journal

Neutrino's nursery found: the 'Shadow Blaster'.

Nature·2026
See all related articles

The human visual system uses "motion streaks" – spatial signals created by fast-moving features – to determine motion direction. This mechanism, observed in psychophysical experiments, aligns with neural properties in the primary visual cortex (V1).

Area of Science:

  • Neuroscience
  • Computational Vision
  • Human Perception

Background:

  • Neurons in the primary visual cortex (V1) are direction selective but provide ambiguous motion information.
  • Existing models suggest resolving ambiguity involves combining velocity components from V1 neuron responses.

Purpose of the Study:

  • To investigate an alternative neural mechanism for determining motion direction: the use of spatial signals from smeared features.
  • To determine if these spatial signals, or "motion streaks," are utilized by the human visual system.

Main Methods:

  • Orientation masking and adaptation experiments were conducted with human participants.
  • Computer simulations were used to model the findings based on known V1 neuron properties.

Main Results:

Related Experiment Videos

  • Psychophysical evidence shows "motion streaks" are used for motion direction detection at speeds above 1 feature width per 100 ms.
  • Simulations confirm consistency between psychophysical findings and V1 neural response properties.

Conclusions:

  • The human visual system employs "motion streaks" as a viable mechanism for resolving motion direction ambiguity.
  • These spatial signals, when processed effectively, are sufficient for determining motion direction in complex natural scenes.