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 perception over long interstimulus intervals.

P J Bex1, C L Baker

  • 1McGill University, Montreal, Quebec, Canada. bex@psy.gla.ac.uk

Perception & Psychophysics
|September 25, 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

Observation of copulation in Amphiuma tridactylum.

Journal. Tennessee Academy of Science·2010
Same author

The glucagon-like peptide 1 receptor is essential for postprandial lipoprotein synthesis and secretion in hamsters and mice.

Diabetologia·2009
Same author

A circadian clock in Neurospora: how genes and proteins cooperate to produce a sustained, entrainable, and compensated biological oscillator with a period of about a day.

Cold Spring Harbor symposia on quantitative biology·2008
Same author

Circadian output, input, and intracellular oscillators: insights into the circadian systems of single cells.

Cold Spring Harbor symposia on quantitative biology·2008
Same author

Clinical Evaluation of the Athlete's Shoulder.

Journal of athletic training·2006
Same author

Local and global visual grouping: tuning for spatial frequency and contrast.

Journal of vision·2003
Same journal

Response organization in selective adaptation to speech sounds.

Perception & psychophysics·2014
Same journal

Reaction times to comparisons within and across phonetic categories.

Perception & psychophysics·2012
Same journal

Auditory and phonetic memory codes in the discrimination of consonants and vowels.

Perception & psychophysics·2012
Same journal

Simple and contingent adaptation effects for place of articulation in stop consonants.

Perception & psychophysics·2012
Same journal

Auditory property detectors and processing place features in stop consonants.

Perception & psychophysics·2012
Same journal

Visual working memory for line orientations and face identities.

Perception & psychophysics·2008
See all related articles

This study reveals two distinct nonlinear mechanisms supporting motion perception. One mechanism excels at short interstimulus intervals (ISIs) and small displacements, while the other handles longer ISIs and larger displacements, showing different sensitivities to masking.

Area of Science:

  • Visual perception
  • Neuroscience
  • Computational vision

Background:

  • Motion perception is thought to involve multiple mechanisms.
  • Previous research identified quasilinear and nonlinear systems for motion processing.
  • Nonlinear mechanisms are sensitive to texture envelopes and contrast, distinct from luminance-based processing.

Purpose of the Study:

  • To investigate the nonlinear mechanisms of motion perception.
  • To characterize the properties of these mechanisms across a wide range of interstimulus intervals (ISIs).
  • To determine the influence of distractor patterns on nonlinear motion processing.

Main Methods:

  • Utilized moving arrays of textured micropatterns.
  • Measured direction discrimination for two-flash apparent motion.

Related Experiment Videos

  • Assessed susceptibility to masking by incoherently moving distractor micropatterns.
  • Varied interstimulus intervals (ISIs) and micropattern densities.

    • Main Results:

    • Identified two distinct nonlinear mechanisms supporting motion perception.
    • A short-ISI mechanism ( < 100 msec) is sensitive to small displacements and less affected by distractors.
    • A long-ISI mechanism is insensitive to small displacements and highly susceptible to distractor masking.

    Conclusions:

    • Evidence suggests at least three distinct mechanisms contribute to motion perception.
    • The findings refine our understanding of the parallel processing of visual motion.
    • Nonlinear motion processing involves separable systems with different temporal and spatial characteristics.