Final answer:
Language function is localized in the left cerebral hemisphere in the majority of people, but there are cases of language deficits resulting from right-side brain damage as well.
Step-by-step explanation:
Lateralization refers to the localization of language function to one side of the brain. In the majority of people, language function is localized in the left cerebral hemisphere. This means that the left hemisphere of the brain controls the right half of the body and is responsible for producing and understanding speech.
Studies have shown that damage to the left side of the brain can result in aphasia, a loss of speech function. Conversely, damage to the right side of the brain can also affect language use, such as understanding figurative speech or nonverbal aspects of communication. Therefore, while language function is primarily localized in the left hemisphere, there are cases of language deficits resulting from right-side brain damage as well.