Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Depth Perception and Spatial Vision

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.

Association Areas of the Cortex

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...

Vision

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.

Anatomy of the Eyeball

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,...

Focusing of Light in the Eye

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...

You might also read

Related Articles

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

Sort by

Same author

Lawful kinematics link eye movements to the limits of high-speed perception.

Nature communications·2025

Same author

PTVR - A software in Python to make virtual reality experiments easier to build and more reproducible.

Journal of vision·2024

Same author

A New Vessel-Based Method to Estimate Automatically the Position of the Nonfunctional Fovea on Altered Retinography From Maculopathies.

Translational vision science & technology·2023

Same author

Multisensory temporal binding induces an illusory gap/overlap that reduces the expected audiovisual interactions on saccades but not manual responses.

PloS one·2022

Same author

Neural correlates of intra-saccadic motion perception.

Journal of vision·2021

Same author

The inhibitory effect of word neighborhood size when reading with central field loss is modulated by word predictability and reading proficiency.

Scientific reports·2020

Search research articles

Related Experiment Video

Updated: May 16, 2026

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

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

Published on: July 21, 2020

The Optimal Viewing Position effect in the lower visual field.

Marina Yao-N'dré¹, Eric Castet, Françoise Vitu

¹Laboratoire de Psychologie Cognitive, CNRS, Aix-Marseille Université, Marseille, France. marinayaondre@gmail.com

Vision Research

|November 20, 2012

Summary

This summary is machine-generated.

The Optimal Viewing Position (OVP) effect is weaker in the lower visual field, suggesting letter visibility impacts word recognition. This is crucial for individuals with central vision loss reading in their periphery.

More Related Videos

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation

Published on: December 8, 2023

Related Experiment Videos

Last Updated: May 16, 2026

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

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

Published on: July 21, 2020

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation

Published on: December 8, 2023

Area of Science:

Visual perception
Reading neuroscience
Ophthalmology

Background:

The Optimal Viewing Position (OVP) effect describes enhanced word identification when initial eye fixations are near word centers.
Research on OVP has primarily focused on central vision, with limited investigation into peripheral word presentation.

Purpose of the Study:

To compare the OVP effect for words presented centrally versus in the lower visual field.
To investigate the role of letter visibility in modulating the OVP phenomenon.

Main Methods:

A perceptual identification task was employed to assess word recognition.
The OVP effect was measured for words presented on the line of sight and in the lower visual field.

Main Results:

The OVP effect was confirmed for both central and lower visual field word presentations.
However, the OVP effect was significantly diminished in the lower visual field compared to central presentation.

Conclusions:

Letter visibility plays a critical role in shaping the OVP effect.
Optimal eye alignment with word centers is less critical for vertically-shifted words in the periphery.
Findings have implications for understanding reading strategies in individuals with central vision loss.