Which type of aphasia allows a person to speak with normal grammar but not understand language?

The correct answer highlights a condition in which an individual is capable of producing fluent speech, often with normal grammatical structure, but struggles to comprehend language. This condition is known as receptive aphasia, which is typically associated with damage to the Wernicke's area in the brain. Individuals experiencing receptive aphasia may speak in long, flowing sentences that lack meaning or may use nonsensical words, as they do not fully process the language that is being communicated to them or even the language they express.

In context, expressive aphasia refers to the difficulty in producing language, where a person knows what they want to say but struggles to articulate their thoughts effectively. Global aphasia signifies a more severe condition where an individual experiences major difficulties with both comprehension and expression. Transient aphasia describes a temporary episode of language impairment that generally resolves quickly, rather than representing a consistent and ongoing inability to understand language. Understanding these distinctions is crucial for recognizing the characteristics and implications of different types of aphasia in therapeutic settings.