In a study, researchers tested two stroke patients. Patient A produced halting, telegraphic speech ("walk... dog... yesterday") but understood spoken instructions normally. Patient B spoke fluently in long sentences but produced nonsense words and had great difficulty understanding speech. Imaging localized Patient A's lesion to the left frontal lobe and Patient B's to the left temporal lobe.
Patient A's symptoms are most consistent with damage to
- A
Wernicke's area, producing fluent aphasia
- B
The motor cortex, producing dysarthria only
- Ccheck_circle
Broca's area, producing nonfluent aphasia with preserved comprehension
- D
The angular gyrus, producing alexia
Explanation
Broca's aphasia is characterized by halting, effortful speech and relatively spared comprehension, consistent with left frontal lobe damage.