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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.

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Related Experiment Video

Updated: Feb 22, 2026

Block Building Task Identifies Distinct Groups of Left/Right-hand Choice Patterns After Unilateral Peripheral Nerve Injury

Block Building Task Identifies Distinct Groups of Left/Right-hand Choice Patterns After Unilateral Peripheral Nerve Injury

Published on: March 21, 2025

Hemicerebellitis can drive handedness shift.

Mario Mascalchi¹, Matteo Lenge², Andrea Bianchi¹

¹Neuroimaging Unit, A. Meyer Children's Hospital, University of Florence, Viale Pieraccini 23, 50139 Florence, Italy.

Cerebellum & Ataxias

|September 19, 2017

Summary

Childhood hemicerebellitis can cause handedness changes. This study shows how the brain reorganizes motor control after right cerebellar damage, leading to left-handedness.

Area of Science:

Neuroscience
Developmental Neurology
Cerebellar Function

Background:

Hemicerebellitis is a rare pediatric condition affecting the cerebellum.

Keywords:

Brain mapping Cerebellum: Childhood fMRI

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Last Updated: Feb 22, 2026

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Acquired cerebellar damage can lead to functional reorganization and altered motor control.

Switched handedness is a potential residual symptom after cerebellar insult.