Lesion in Wernicke's area results in:
The two areas concerned with language and speech are: (i) Wernicke's area (the sensory area for speech) in the superior temporal lobe and (ii) Broca's area (the motor area for speech) in the inferior frontal lobe. Wernicke's area: After understanding and comprehension of the word, the impulses are sent, arcuate fasciculus, to the Broca's area. Lesion: Speech production is normal (since motor area that finally produces actual words is not damaged). However, patients talk excessively; what they say is full of jargon and neologisms that make little sense. Patient fails to comprehend the meaning of spoken or written words. This is called fluent aphasia.
Global aphasia
Non-fluent aphasia
Conduction aphasia
Failure of comprehension of spoken or written words
Higher Functions