Conduction aphasia Fluent speech, spared comprehension, and poor repetition. Lesions may disconnect Wernicke's from Broca's area. Global aphasia Non-fluent speech, poor repetition and poor comprehension. The entire perisylvian cortex is involved. The transcortical aphasias These are characterized by intact repetition.
Lesions are more varied than with perisylvian aphasias.
In addition to the cortical localizations noted, transcortical aphasias may result from subcortical damage. Transcortical motor aphasia Speech is non-fluent, but repetition and comprehension are spared. Lesions are frontal, but spare Broca's area. Comprehension is impaired, but repetition is normal. Lesions are posterior, but spare Wernicke's area.