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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.

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Related Experiment Video

Updated: Jun 5, 2026

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention

Published on: November 16, 2017

Right-hemispheric dominance for visual remapping in humans.

L Pisella¹, N Alahyane, A Blangero

¹INSERM, U864, Espace et Action, 16 avenue Lépine, Bron 69676, France. laure.pisella@inserm.fr

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences

|January 19, 2011

Summary

The right hemisphere is dominant for visuospatial processing. A specific network in the right temporo-parietal junction (TPJ) is crucial for visual remapping, impacting saccadic eye movements.

Related Experiment Videos

Last Updated: Jun 5, 2026

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention

Published on: November 16, 2017

Area of Science:

Neuroscience
Cognitive Psychology
Visuospatial Processing

Background:

Right-hemispheric dominance is established for visuospatial processing.
Visual disorganization symptoms, like neglect and constructional apraxia, suggest remapping impairments.

Purpose of the Study:

Investigate the role of the right temporo-parietal junction (TPJ) in visual remapping.
Examine the impact of callosal lesions on interhemispheric information transfer for saccadic tasks.

Main Methods:

Review of intervening saccade paradigm findings.
Presentation of original data from a patient with a double-step saccadic task.
Analysis of lesions in the right dorsal posterior parietal cortex (PPC) and corpus callosum.

Main Results:

A patient with right PPC and callosal damage showed impaired rightward saccades.
This deficit was linked to interrupted interhemispheric transfer, not solely the cortical lesion.
Evidence suggests a specialized right-hemispheric network for visuospatial remapping.

Conclusions:

The right TPJ network plays a specific role in visual remapping.
Callosal connections are vital for interhemispheric transfer of spatial information.
This specialized network informs symmetrically organized downstream planning regions.