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

The predictive power of trajectory motion.

Scott N J Watamaniuk1

  • 1Department of Psychology, Wright State University, Dayton, OH 45435, USA. scott.watamaniuk@wright.edu

Vision Research
|September 13, 2005
PubMed
Summary

Motion perception resolves the Poggendorff illusion, where observers misalign oblique lines. Consistent trajectory motion of a dot, not just its presence, accurately aligns segments, even behind occluders.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same authorSame journal

A new oculomotor model demystifies "Remarkable Saccades".

Vision research·2026
Same author

Peripheral targets attenuate miniature eye movements during fixation.

Scientific reports·2023
Same author

A common mechanism modulates saccade timing during pursuit and fixation.

Journal of neurophysiology·2019
Same author

Choosing a foveal goal recruits the saccadic system during smooth pursuit.

Journal of neurophysiology·2018
Same author

Illusory motion reveals velocity matching, not foveation, drives smooth pursuit of large objects.

Journal of vision·2017
Same author

A Subconscious Interaction between Fixation and Anticipatory Pursuit.

The Journal of neuroscience : the official journal of the Society for Neuroscience·2017

Area of Science:

  • Visual perception
  • Motion perception
  • Psychophysics

Background:

  • The Poggendorff illusion demonstrates misalignment of oblique lines bisected by an occluder.
  • Previous research indicates visual illusions can be influenced by motion cues.

Purpose of the Study:

  • To investigate if motion perception can resolve the Poggendorff illusion.
  • To determine the specific characteristics of motion that influence alignment perception.

Main Methods:

  • Oblique line segments were replaced with moving dots on trajectories.
  • Varied motion consistency (consistent vs. random) and occluder types (opaque, motion-defined).
  • Assessed perceived alignment of the segments.

Main Results:

  • Consistent trajectory motion of a dot eliminated the Poggendorff illusion.
  • Random dot motion did not resolve the illusion, highlighting trajectory's importance.
  • Illusion was nullified even with one motion-defined segment or motion-defined occluders.

Conclusions:

  • Trajectory motion generates predictive activity in motion detectors, extending perception beyond occlusion.
  • This predictive mechanism underlies the accurate alignment of motion-defined segments.
  • Visual system uses motion prediction to maintain object continuity and spatial awareness.

Related Experiment Videos