One in Five Left-Handers Relies on Right Hemisphere for Language Processing

A recent study has revealed that approximately 20% of left-handed individuals exhibit atypical language lateralization, relying on their brain’s right hemisphere for language processing instead of the left hemisphere, which is typical for most people. Researchers have identified this phenomenon as a unique characteristic among a subset of left-handers, raising questions about its implications for brain organization and human behavior. The findings shed light on how this atypical group processes language differently compared to the majority of the population.

Left-handedness accounts for roughly 10% of the global population, but within this group, one in five demonstrates this unusual neurological pattern. While most individuals use their left hemisphere to manage language functions, these atypical left-handers depend on their right hemisphere for speech. Additionally, researchers noted that these individuals utilize their left hemisphere for inhibition-related tasks. This discovery contributes to ongoing efforts in neuroscience to understand how variations in brain lateralization influence cognitive functions and behavioral outcomes.

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Source: GO-AI-ne1

Date: June 9, 2025

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Author

Mark Chiang