Given the following case study, identify which side of the patient's body would most likely experience paralysis or significant weakness. Justify your answer based on the fundamental principle of how the brain's halves control movement.

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A fundamental principle of brain organization is that each cerebral hemisphere is primarily responsible for controlling the motor functions of the opposite, or contralateral, side of the body. For example, the right hemisphere directs movement on the left side of the body, while the left hemisphere directs movement on the right.

Contralateral Motor Control

Predicting Motor Impairment from Brain Injury

A patient is admitted to the emergency room after experiencing a stroke. A brain scan reveals significant damage localized to the motor cortex in the patient's right cerebral hemisphere. Based on this information, what is the most likely observable physical symptom you would expect to see in this patient? Explain your reasoning based on the functional organization of the brain.

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