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Lateralization

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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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Updated: Jun 24, 2025

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection

Published on: March 10, 2021

[Rehabilitation for Unilateral Spatial Neglect].

Katsuhiro Mizuno¹

¹Department of Rehabilitation Medicine, Tokai University School of Medicine.

Brain and Nerve = Shinkei Kenkyu No Shinpo

|June 10, 2024

Summary

Unilateral spatial neglect (USN) may stem from disrupted visual attention networks. Non-invasive brain stimulation and understanding brain connectivity offer promising avenues for USN rehabilitation and predicting patient outcomes.

Area of Science:

Neuroscience
Neurology
Rehabilitation Medicine

Background:

Unilateral spatial neglect (USN) results from unilateral brain damage, causing sensory and motor deficits.
USN is hypothesized to arise from an imbalanced visual attention network between brain hemispheres.
Non-invasive brain stimulation (NIBS) techniques are explored for USN rehabilitation.

Purpose of the Study:

To explore the role of interhemispheric balance in the visual attention network in USN.
To review the efficacy of non-invasive brain stimulation (NIBS) in USN rehabilitation.
To understand how brain connectivity influences USN recovery and treatment effectiveness.

Main Methods:

Review of recent research on USN pathophysiology and treatment.

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Focus on non-invasive brain stimulation (NIBS) methods like continuous theta burst stimulation (cTBS).

Analysis of neuroimaging studies examining functional and structural connectivity.

Main Results:

Inhibitory stimulation (cTBS) on the contra-lesional parietal cortex shows promise for USN.
The attentional network of the non-lesioned hemisphere is crucial for USN recovery.
Brain connectivity patterns predict spontaneous recovery and rehabilitation success.

Conclusions:

Understanding USN pathophysiology, particularly interhemispheric communication, is key.
NIBS and analysis of brain connectivity can guide rehabilitation strategies.
Further research can lead to personalized treatment selection for USN patients.