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

A specialization for relative disparity in V2.

O M Thomas1, B G Cumming, A J Parker

  • 1Laboratory of Physiology, University of Oxford, Parks Road, Oxford OX1 3PT, UK. owen.thomas@physiol.ox.ac.uk

Nature Neuroscience
|April 23, 2002
PubMed
Summary

Researchers studied how the brain processes depth using relative binocular disparities. Neurons in visual area V2 show sensitivity to these relative disparities, supporting human depth 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

Search for Heavy Neutral Leptons in Decays of W Bosons Using a Dilepton Displaced Vertex in sqrt[s]=13  TeV pp Collisions with the ATLAS Detector.

Physical review letters·2023
Same author

Observation of WWW Production in pp Collisions at sqrt[s]=13  TeV with the ATLAS Detector.

Physical review letters·2022
Same author

Search for Lepton-Flavor Violation in Z-Boson Decays with τ Leptons with the ATLAS Detector.

Physical review letters·2022
Same author

Intra-Areal Visual Topography in Primate Brains Mapped with Probabilistic Tractography of Diffusion-Weighted Imaging.

Cerebral cortex (New York, N.Y. : 1991)·2021
Same author

Search for New Phenomena in Final States with Two Leptons and One or No b-Tagged Jets at sqrt[s]=13  TeV Using the ATLAS Detector.

Physical review letters·2021
Same author

Search for Displaced Leptons in sqrt[s]=13  TeV pp Collisions with the ATLAS Detector.

Physical review letters·2021

Area of Science:

  • Neuroscience
  • Computational Vision
  • Primate Vision

Background:

  • Stereoscopic depth perception is crucial for navigating environments.
  • This perception relies on binocular disparities, the differences between images seen by each eye.
  • Relative disparities, derived from multiple visual features, are key for accurate depth judgments.

Purpose of the Study:

  • To investigate whether neurons in the early visual cortex (V2) are specifically sensitive to relative disparities.
  • To determine if neural responses in V2 can account for psychophysical observations of relative depth perception.

Main Methods:

  • Electrophysiological recordings were conducted on neurons in the V2 of awake macaques.
  • Stimuli consisted of random-dot patterns with independently manipulated depths in central and surrounding regions.
  • Neural responses were analyzed for selectivity to relative disparities presented in the stimuli.

Main Results:

  • A subset of V2 neurons exhibited full selectivity for relative disparities.
  • The majority of recorded neurons showed partial selectivity, indicating sensitivity to the depth relationship between the center and surround.
  • These neural responses varied in strength but consistently reflected the relative depth information.

Conclusions:

  • The findings demonstrate that early visual area V2 contains neurons specifically tuned to relative disparities.
  • Both fully and partially selective neural responses in V2 can underpin the brain's ability to make relative depth judgments.
  • This highlights V2's significant role in processing complex stereoscopic information for depth perception.

Related Experiment Videos