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

Global induced motion and visual stability in an optic flow illusion

C Pack1, E Mingolla

  • 1Department of Cognitive and Neural Systems, Boston University, MA 02215, USA. chpack@cns.bu.edu

Vision Research
|January 20, 1999
PubMed
Summary

Illusory motion perception shifts the focus of expansion (FOE) when planar motion is added to visual flow fields. This effect involves both local and global visual processing mechanisms, aiding visual stability.

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

Alcock canal syndrome secondary to endometrial infiltration.

Neurologia (Barcelona, Spain)·2015
Same author

Minor antigens on transfused RBCs crossprime CD8 T cells but do not induce full effector function.

American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons·2011
Same author

Dural ectasia in Marfan syndrome.

Neurology·2009
Same author

Dural ectasia in Marfan syndrome.

Neurology·2008
Same author

Laminar cortical dynamics of visual form and motion interactions during coherent object motion perception.

Spatial vision·2007
Same author

Optimisation of DNA vaccines for the prophylaxis and modulation of herpes simplex virus infections.

Expert opinion on biological therapy·2001

Area of Science:

  • Visual perception
  • Neuroscience
  • Computational vision

Background:

  • Planar motion overlapping an expansion flow field causes an illusory shift in the focus of expansion (FOE).
  • This illusion may result from induced motion or higher-level processing that subtracts planar motion from the visual flow field.

Purpose of the Study:

  • To investigate the underlying mechanisms of the illusory FOE shift.
  • To differentiate between local (center-surround) and global motion processing contributions.

Main Methods:

  • Presenting observers with expansion flow fields combined with planar motion.
  • Introducing controlled amounts of rotation into the stimulus.
  • Varying the speed and size of the planar motion field.

Related Experiment Videos

Main Results:

  • Rotation introduced an illusory FOE shift perpendicular to the planar motion.
  • Larger FOE shifts occurred with increased planar motion speed and size, with speed effects saturating at higher velocities.
  • The illusion appears to involve both center-surround mechanisms and a global process for subtracting planar motion.

Conclusions:

  • The illusory FOE shift is influenced by both local and global visual processing.
  • A global mechanism for subtracting coherent planar motion likely contributes to visual stability during eye movements.