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

Visual System

Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...

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.

Visual Agnosia

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...

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,...

You might also read

Related Articles

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

Sort by

Same author

Phase-Specific Electroencephalography Monitoring: A Dynamic Approach to Predict Postoperative Delirium During Aortic Surgery.

Journal of neurosurgical anesthesiology·2026

Same author

Influence of the Electrode-Neuron Interface and Asymmetry of Pulses on the Spread of Excitation in Cochlear Implants: A Computational Study.

Trends in hearing·2026

Same author

The Association Between Early Postoperative Temperature Trajectories and Severe Acute Kidney Injury After Valvular Heart Surgery: A Retrospective Cohort Study.

Journal of clinical medicine·2026

Same author

Association between the Rate of Intraoperative Crystalloid Infusion and Postoperative Outcomes in Older Patients Undergoing Spinal Surgery: A Retrospective Cohort Study.

Spine·2025

Same author

Preoperative Predictors of Subsequent Breast Cancer Events Detected on Abbreviated MRI in Patients with Early-Stage Breast Cancer.

Diagnostics (Basel, Switzerland)·2025

Same author

Multiple patterns of selectivity in superior colliculus control visual search.

bioRxiv : the preprint server for biology·2025

Search research articles

Related Experiment Video

Updated: Jun 22, 2026

Defining the Role Of Language in Infants' Object Categorization with Eye-tracking Paradigms

Defining the Role Of Language in Infants' Object Categorization with Eye-tracking Paradigms

Published on: February 8, 2019

Visual search is guided to categorically-defined targets.

Hyejin Yang¹, Gregory J Zelinsky

¹Department of Psychology, Stony Brook University, Stony Brook, NY 11794, United States.

Vision Research

|June 9, 2009

Summary

Visual search for categories like teddy bears is guided by a general feature model, not just specific examples. This categorical guidance helps find targets faster than random chance, even without a preview.

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

An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

Published on: March 17, 2023

Related Experiment Videos

Last Updated: Jun 22, 2026

Defining the Role Of Language in Infants' Object Categorization with Eye-tracking Paradigms

Defining the Role Of Language in Infants' Object Categorization with Eye-tracking Paradigms

Published on: February 8, 2019

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

An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

Published on: March 17, 2023

Area of Science:

Cognitive Psychology
Visual Perception

Background:

Understanding visual search mechanisms is crucial for explaining how humans locate objects in complex environments.
Previous research has explored feature-based and object-based guidance in visual search.

Purpose of the Study:

To investigate whether visual search is guided by categorical information.
To differentiate between categorical guidance and guidance from specific target exemplars.

Main Methods:

Participants searched for teddy bear targets among realistic object distractors.
Two conditions were employed: a specific condition with target preview and a categorical condition without preview.
Target repetition was manipulated to assess the role of previously viewed targets.

Main Results:

Search performance was longer and involved more eye movements in the categorical condition compared to the specific condition.
Despite increased search effort, targets were fixated significantly earlier than predicted by chance in the categorical condition.
Evidence indicated that categorical guidance was independent of specific previously viewed targets.

Conclusions:

Visual search is effectively guided by categorically-defined targets.
This categorical guidance relies on an internal model comprising features common to the target category.
The findings suggest a sophisticated mechanism for category-level visual guidance.