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 Concept Videos

Color Vision01:24

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
Anatomy of the Eyeball01:20

Anatomy of the Eyeball

The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle layer, the vascular tunic,...
Difference from Background: Limit of Detection01:05

Difference from Background: Limit of Detection

The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
Vision01:24

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Signal combination in flutter vibration perception.

PloS one·2026
Same author

Pathological suppression of binocular vision in stroke.

Optometry and vision science : official publication of the American Academy of Optometry·2026
Same author

Neural responses to binocular in-phase and anti-phase stimuli.

Vision research·2026
Same author

The influence of similarity, sensitivity and bias on letter identification.

Vision research·2026
Same author

Summation of contrast across the visual field: A common "fourth root" rule holds from the fovea to the periphery.

Vision research·2026
Same author

Introducing Philosophy Corner.

Perception·2025

Related Experiment Video

Updated: Jul 17, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

Binocular contrast vision at and above threshold.

Tim S Meese1, Mark A Georgeson, Daniel H Baker

  • 1School of Life and Health Sciences, Aston University, Birmingham, UK. t.s.meese@aston.ac.uk

Journal of Vision
|January 11, 2007
PubMed
Summary

Human vision combines information from two eyes early in the visual cortex. New models explain binocular summation and contrast gain control, favoring a two-stage model for visual processing.

Area of Science:

  • Neuroscience
  • Visual Perception
  • Computational Vision

Background:

  • Binocular vision integrates information from two eyes, crucial for depth perception.
  • Early visual cortex processes luminance contrast, but the precise architecture for human binocular integration remains unclear.

Purpose of the Study:

  • To investigate the systems architecture of binocular contrast summation in human vision.
  • To test and refine existing models of binocular vision and propose new ones.

Main Methods:

  • Conducted binocular summation and masking experiments using horizontal gratings.
  • Compared experimental data against three previously published models and developed two new models: the twin summation and two-stage models.

Main Results:

More Related Videos

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
07:06

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

Related Experiment Videos

Last Updated: Jul 17, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
07:06

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

  • Existing models inadequately explain binocular summation and dichoptic facilitation.
  • The twin summation and two-stage models provide excellent fits to the experimental data.
  • Both successful models incorporate accelerating contrast transduction and suppressive ocular interactions for contrast gain control.

Conclusions:

  • The study refines understanding of how the human visual system integrates information from both eyes.
  • A two-stage model is favored for explaining binocular contrast processing, highlighting the importance of contrast transduction and gain control mechanisms.
  • The findings have implications for understanding visual perception and developing computational models of vision.