Question

A boy met with a motorbike accident. CT brain shows injury to the posterior end of the superior temporal gyrus. He is likely to suffer from

• A. Fluent aphasia
• B. Non-fluent aphasia
• C. Conduction aphasia
• D. None of the above

Answer 1

The Correct Option is A

In the context of the injury described, it is important to understand the anatomical and functional areas of the brain involved in speech and language processing.

The superior temporal gyrus, specifically its posterior part, is associated with Wernicke's area. This area is critical for the comprehension of spoken language. Damage to Wernicke's area typically results in a condition known as Wernicke's aphasia, which is characterized by:

• Impaired language comprehension
• Fluent but nonsensical speech production
• Difficulty in understanding spoken and written language

This type of aphasia is commonly referred to as "Fluent aphasia" because individuals maintain their ability to produce a steady stream of speech, but what they say often lacks meaning or logical content, and they are unable to comprehend spoken language.

Based on this understanding and the location of the injury, the boy in the scenario is likely to suffer from Fluent aphasia.

Options	Explanation
Fluent aphasia	The boy is likely to have this condition due to injury to Wernicke's area in the posterior superior temporal gyrus.
Non-fluent aphasia	This result from damage to Broca's area, not relevant here.
Conduction aphasia	This involves the arcuate fasciculus, not the superior temporal gyrus.
None of the above	Incorrect as Fluent aphasia is the right answer.