Which brain hemisphere is usually associated with language impairment in cases of aphasia?

The left hemisphere of the brain is generally recognized as the area primarily responsible for language processing, and it plays a crucial role in functions such as speaking, understanding, reading, and writing. In cases of aphasia, which is a language disorder that affects a person's ability to communicate, damage or dysfunction typically occurs in the regions of the left hemisphere, particularly in areas known as Broca's area and Wernicke's area.

Broca's area is associated with speech production, while Wernicke's area is linked to language comprehension. When these areas are affected due to stroke, traumatic brain injury, or other neurological conditions, individuals may exhibit various forms of aphasia, which can range from difficulty in producing coherent speech to issues in understanding spoken or written language.

While the right hemisphere also contributes to aspects of language—such as tone, context, and nonverbal cues—its role is not as central or critical as that of the left hemisphere. Therefore, recognizing that the left hemisphere is primarily linked to the impairment of language skills in aphasia helps clarify why this answer is correct.