A Persistent vegetative state(PVS) exists as a result of severe mental impairment, characterized by irreversible cessation of the higher functions of the brain, most often caused by damage to which of the following organs?

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The cerebral cortex is responsible for the higher functions of the brain, including consciousness, perception, memory, and thought. Damage to the cerebral cortex can result in irreversible impairment of these functions, eventually leading to a persistent vegetative state.

A Persistent Vegetative State(PVS) Exists as a Result of Severe