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...

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.

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...

Lateralization

Lateralization

Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.

You might also read

Related Articles

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

Sort by

Same author

Evaluating sequence-to-function deep learning models for ancestry-stratified regulatory variant effect prediction using multi-ancestry blood eQTLs.

bioRxiv : the preprint server for biology·2026

Same author

Combining post-mortem and neuroimaging measures of brain amyloidosis to accelerate genomic discovery.

Brain : a journal of neurology·2026

Same author

The gut-brain axis in Alzheimer's disease: early detection, microbial metabolites, mechanisms, and therapeutic opportunities.

Frontiers in molecular biosciences·2026

Same author

Leadership, Informatics Expertise, and Resources: Determinants of Institutional Data Sharing in the National Clinical Cohort Collaborative (N3C).

AMIA Joint Summits on Translational Science proceedings. AMIA Joint Summits on Translational Science·2026

Same author

Multi-ancestry transcriptome-wide association study reveals shared and population-specific genetic effects in Alzheimer disease.

American journal of human genetics·2026

Same author

Genetic correlation analysis of Alzheimer's disease and stroke implicates PHLPP1 as a shared locus in individuals of African ancestry.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2026

Same journal

When criterion control in face matching induces correlation: Commentary on Baker et al. (2026).

Cognition·2026

Same journal

Corrigendum to "Productivity matters for the neural processing of novel words, but not existing ones" Cognition Volume 274 (2026) 106593.

Cognition·2026

Same journal

Investigating the origins of partisanship: What motivates children to preferentially endorse their ingroups' claims?

Cognition·2026

Same journal

People make graded judgments about the inconceivable.

Cognition·2026

Same journal

The self as an image: Appearance and belief in visual representations of one's own face.

Cognition·2026

Same journal

Corrigendum to 'Consonant, vowel, and tone cues in early wordform recognition: Evidence from Cantonese-learning infants' [Cognition 275 (2026) 106624].

Cognition·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Apr 26, 2026

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

Differential effect of one versus two hands on visual processing.

William S Bush¹, Shaun P Vecera¹

¹Department of Psychology, University of Iowa, Iowa City, United States.

|July 25, 2014

Summary

This summary is machine-generated.

Hand position affects visual attention. A single hand narrows focus, while two hands expand attention, influencing temporal and spatial task performance differently.

Keywords:

Attention Hand position Spatial attention Spatial sensitivity Temporal sensitivity

More Related Videos

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

Related Experiment Videos

Last Updated: Apr 26, 2026

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

Area of Science:

Cognitive Psychology
Neuroscience
Visual Perception

Background:

Hand position near a visual display is known to affect visual task performance.
Theoretical accounts suggest this influence is mediated by spatial attention or magnocellular pathway bias.
Previous research lacks clarity on whether single vs. dual hand manipulations yield comparable perceptual effects.

Purpose of the Study:

To investigate how hand position influences the spatial distribution of attention.
To determine if manipulating one hand versus both hands differentially impacts visual processing.
To compare the effects of single and dual hand proximity on temporal and spatial discrimination tasks.

Main Methods:

Examined the impact of four distinct hand positions (left hand, right hand, both hands, no hands) near a screen.
Assessed performance on both temporal and spatial discrimination tasks under each hand position condition.
Compared sensitivity changes across tasks based on the number and location of hands near the display.

Main Results:

Two hands near the display improved temporal task sensitivity but reduced spatial task sensitivity, consistent with prior findings.
Single hand manipulations near the display produced the opposite pattern of results compared to dual hand manipulations.
These findings indicate differential effects of single versus dual hand presence on visual perception.

Conclusions:

Visual attention appears to be focused on the 'graspable' space when a single hand is near the display.
Attention distribution expands when two hands frame a visual field area.
Hand position significantly modulates spatial attention allocation, impacting visual task performance in a manner dependent on the number of hands involved.