Superior Temporal Gyrus

Bilateral STG organize phonological recognition of speech 9

• Bilateral damage may cause auditory verbal agnosia, or, pure word deafness (poor comprehension of verbal words with preserved reading comprehension and hearing)

• Lesions in left STG may lead to deficits in word recognition, though this is primarily on the semantic rather than phonological level 9

• Left STG may be more involved in temporal phonological processing and right with spectral (frequency) processing 10

Left dorsal posterior STG / supramarginal gyrus is associated with conduction aphasia (good comprehension and fluent speech but poor repetition) 9