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

Line intensity affects perceived shape

R S Noss1

  • 1Division of Neurobiology, University of California, Berkeley 94720.

Vision Research
|February 1, 1994
PubMed
Summary
This summary is machine-generated.

Line intensity influences perceived visual curvature, but not line tilt or acute angles. This suggests specific orientation ranges are crucial for processing curvature, with effects limited to obtuse chevrons.

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

The use of motor-evoked potentials to monitor sciatic nerve status during revision total hip arthroplasty.

The Journal of arthroplasty·2003
Same author

Facial nerve monitoring in middle ear and mastoid surgery.

The Laryngoscope·2001
Same author

Very late pain-related activity identified with topographically mapped frequency domain analysis of evoked potentials.

Electroencephalography and clinical neurophysiology·1998
Same author

Steady-state analysis of somatosensory evoked potentials.

Electroencephalography and clinical neurophysiology·1996
Same author

Apparent motion confounds early vernier visual evoked potentials.

Brain research·1996

Area of Science:

  • Visual perception
  • Psychophysics
  • Computational neuroscience

Background:

  • Understanding how visual stimuli properties influence perception is key to visual neuroscience.
  • Previous research has explored various factors affecting visual judgments, but the specific role of line intensity on curvature perception remains less defined.

Purpose of the Study:

  • To investigate the impact of line intensity on the perception of visual elements like lines, chevrons, and circular arcs.
  • To determine if changes in line intensity systematically alter perceived curvature, tilt, or angles.
  • To explore the underlying mechanisms and limitations of curvature processing in the visual system.

Main Methods:

  • A novel method for measuring stimulus parameter variation was employed.
  • Participants' perception of line tilt, chevron angles, and circular arc curvature was assessed under varying line intensities.

Related Experiment Videos

  • Results were compared with computational models and existing psychophysical and neural data.

    • Main Results:

    • Perceived curvature of circular arcs significantly increased with higher line intensity.
    • Analogous effects were observed for obtuse chevrons but not for acute chevrons, indicating orientation-specific processing.
    • No clear trends were found for perceived tilt of lines or acute chevron angles, highlighting the specificity of curvature findings.

    Conclusions:

    • Line intensity is a critical factor influencing the perception of visual curvature, particularly for obtuse angles.
    • The visual system appears to have limitations in processing curvature, with specific orientation ranges being more sensitive to intensity variations.
    • Findings support computational models and psychophysical data suggesting specialized mechanisms for curvature perception.