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

Visual discrimination of local surface depth and orientation

F D Reichel1, J T Todd, E Yilmaz

  • 1Department of Cognitive and Linguistic Sciences, Brown University, Providence, RI 02912, USA.

Perception & Psychophysics
|November 1, 1995
PubMed
Summary

Human 3D form perception is less precise than previously assumed. Our study shows that discriminating depth and orientation on curved surfaces is surprisingly coarse-grained, challenging existing theories of visual perception.

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

Role of molecular driver mutations in recurrence of early-stage laryngeal cancer following narrow field definitive radiotherapy.

Oral oncology reports·2026
Same author

Psychosocial outcome of COVID-19 patients requiring ventilation after ECMO versus long-term mechanical ventilation.

Frontiers in cardiovascular medicine·2026
Same author

WEIGHT LOSS AND BEYOND, ASSESSMENT OF QUALITY OF LIFE AFTER LAPAROSCOPIC SLEEVE GASTRECTOMY USING BAROS IN PATIENTS WITH OBESITY IN TURKEY.

Acta endocrinologica (Bucharest, Romania : 2005)·2024
Same author

Predictive value of the frontal QRS-T angle for a permanent pacemaker requirement in patients undergoing transcatheter aortic valve implantation.

European review for medical and pharmacological sciences·2023
Same author

The effect of L-thyroxine treatment on ventricular dysfunction and pulmonary arterial stiffness in patients with subclinical hypothyroidism.

European review for medical and pharmacological sciences·2022
Same author

The predictive value of residual SYNTAX score and SYNTAX revascularization index for contrast-induced nephropathy in patients with ST-segment elevation myocardial infarction.

European review for medical and pharmacological sciences·2022

Area of Science:

  • * Visual Perception
  • * 3D Form Perception
  • * Computational Neuroscience

Background:

  • * Theoretical models of 3D form perception often assume local metric depth and orientation mappings.
  • * Empirical validation of these perceptual representations in human vision is limited.
  • * Understanding the accuracy of metric structure perception is crucial for visual science.

Purpose of the Study:

  • * To empirically investigate the accuracy of metric depth and orientation discrimination on curved surfaces.
  • * To test the psychological validity of local mappings in 3D form perception.
  • * To quantify the precision of human observers in perceiving 3D surface structure.

Main Methods:

  • * Observers discriminated between pairs of points on shaded/textured 3D curved surfaces.

Related Experiment Videos

  • * Experiment 1: Judged differences in metric depth between point pairs.
  • * Experiment 2: Judged differences in surface orientation between point pairs.

    • Main Results:

    • * Weber fractions for depth and orientation discrimination were significantly higher than for other sensory tasks.
    • * Perception of metric structure from shaded/textured displays was found to be coarse-grained.
    • * Discrimination accuracy varied by 10 to 100 times compared to established sensory discrimination thresholds.

    Conclusions:

    • * The human visual system's perception of metric depth and orientation on curved surfaces is surprisingly imprecise.
    • * Current theoretical models may overestimate the precision of local metric representations in 3D form perception.
    • * Further research is needed to refine models of 3D visual perception based on empirical findings.