If you continually practice a skill involving precise, coordinated movements of the fingers, the areas associated with your fingers in the sensory and motor cortices will increase in size and/or function.

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This is known as neuroplasticity, where the brain can adapt and reorganize itself in response to repeated behaviors or experiences. Research has shown that musicians, for example, have larger areas of the sensory and motor cortices associated with the fingers compared to non-musicians.

If You Continually Practice a Skill Involving Precise, Coordinated Movements