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

Parallel Processing

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...

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...

You might also read

Related Articles

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

Sort by

Same author

Peripheral scene context modulates task-driven saccades toward peripheral objects.

Vision research·2026

Same author

Perceptual Learning as a Rehabilitation Approach to Enhance Motion Processing in Maculopathy Patients.

Investigative ophthalmology & visual science·2026

Same author

Do congruency effects in Navon's and Stroop's paradigms reflect the same (control) mechanisms? A conceptual analysis and an empirical test.

Psychological review·2026

Same author

Local/global visual processing impacts numerosity-magnitude conflict resolution.

Scientific reports·2026

Same author

Enhancing peripheral scene recognition through spatial frequency training: Behavioral evidence from macular degeneration and healthy aging.

Neuropsychologia·2026

Same author

Paper vs. screen: inclination matters during global-local visual processing.

Frontiers in psychology·2026

Search research articles

Related Experiment Video

Updated: Jun 23, 2025

Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients

Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients

Published on: June 17, 2019

Neural correlates underlying local and global processing during visual search across adulthood.

Gaelle Doucet^1,2, Jordanna A Kruse¹, Noah Hamlin¹

¹Institute for Human Neuroscience, Boys Town National Research Hospital, Omaha, Nebraska, United States of America.

|June 21, 2024

Summary

This summary is machine-generated.

Aging impacts visual processing, with older adults showing slower responses to local details, especially with distractors. Brain imaging reveals altered neural activity in visual and salience networks in older individuals.

More Related Videos

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

Published on: July 9, 2016

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance

Published on: May 7, 2014

Related Experiment Videos

Last Updated: Jun 23, 2025

Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients

Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients

Published on: June 17, 2019

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

Published on: July 9, 2016

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance

Published on: May 7, 2014

Area of Science:

Neuroscience
Cognitive Psychology
Aging Research

Background:

Visual processing involves integrating local and global features.
Neural mechanisms of visual processing, particularly in aging, require further investigation.
The salience network plays a role in attention and cognitive control.

Purpose of the Study:

To investigate the neural correlates of local and global visual processing in young and older adults using fMRI.
To examine how aging affects brain activity during complex visual search tasks.
To explore the role of the salience network in age-related changes in visual processing.

Main Methods:

Functional magnetic resonance imaging (fMRI) was used to study 77 healthy adults (aged 19-77).
Participants performed a visual search task involving hierarchical stimuli at local and global levels.
Behavioral data (accuracy, reaction time) and brain activation patterns were analyzed.

Main Results:

Older adults were slower in detecting local targets, particularly with distractors.
Both local and global processing engaged occipital areas; local processing additionally activated the salience network (anterior insula, dorsal ACC).
Older adults showed reduced occipital activation, especially in complex conditions, and diminished salience network modulation in the presence of distractors.

Conclusions:

Neural mechanisms of local and global visual processing differ between young and older adults.
Aging alters the interplay between the salience network and visual processing areas.
Reduced top-down control from the salience network may contribute to difficulties in processing local visual details in older adults.