Final answer:
Wernicke’s aphasia, a false statement, refers to a fluent type of aphasia where speech is produced smoothly, but comprehension of language is impaired, contrary to the claim that it features non-fluent speech.
Step-by-step explanation:
The statement that Wernicke's aphasia is characterized by a lack of fluency of speech, usually with preserved language comprehension, is false. Wernicke's aphasia, also known as receptive aphasia, involves a loss of the ability to understand received language but typically features fluent speech. People with this condition often produce sentences that are grammatically correct and flow smoothly but may lack meaning or contain nonsensical words.
Hence, they can speak with normal grammar, rate, intonation, and stress, but the content may be incorrect. This condition is due to damage to Wernicke's area, which is a region at the posterior end of the lateral sulcus in which speech comprehension is localized. In contrast, Broca's aphasia, also known as expressive aphasia, is associated with non-fluent speech with disrupted grammar and halting speech, but with preserved language comprehension.