Aphasia

Question 1

Lesion in superior temporal gyrus.

Lesions result in sentences that make no sense, word substitution and neologisms but speech remains fluent.

Comprehension impaired

Answer 1

Wernicke’s (receptive) aphasia

Question 2

Lesion of inferior frontal gyrus.

Speech is non-fluent, laboured, and halting. Repetition is impaired.

Comprehension is normal

Answer 2

Broca’s (expressive) aphasia

Question 3

Classically due to a stroke affecting the arcuate fasiculus (connection between Wernicke’s and Broca’s area)

Speech is fluent but repetition is poor. Aware of the errors they are making

Comprehension is normal

Answer 3

Conduction aphasia

Question 4

Large lesion affecting all 3 areas resulting in severe expressive and receptive aphasia

May still be able to communicate using gestures

Answer 4

Global aphasia