In the primary motor cortex,representation of the left half of the body is primarily on the right side of the brain.

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The primary motor cortex follows a contralateral organization, meaning that the representation of the left half of the body is primarily on the right side of the brain, and the representation of the right half of the body is primarily on the left side of the brain. This is known as the motor homunculus.

In the Primary Motor Cortex,representation of the Left Half of the Body