[ XXXX and the language areas].

@entity5785 @entity14510 @entity13523 @entity1504 @entity2319 @entity51 @entity2026 @entity1188 @entity5547 @entity751 @entity244 @entity6658 @entity432 @entity1055 @entity5545
Recent progress of imaging techniques has achieved precise descriptions of @entity751 associated with @entity1504 . @entity1188 of the left anterior cerebral artery brings about transcortical motor @entity2026 . Occlusion of each branches of the left middle cerebral artery produces characteristic language symptoms. Recently, cases with @entity1188 of the areas of prefrontal and precentral arteries were reported to manifest fluent @entity2026 indistinguishable from the classical @entity13523 . Rare cases with lesions restricted to the Broca's area (territory of the precentral artery) produces @entity2026 with normal fluency, word finding @entity51 . Classical non-fluent @entity5785 is caused by @entity1188 which at least involves the areas of precentral and central arteries. Aphemia or @entity14510 results from damages which involves territory of the central artery. Conduction @entity2026 is most often associated with lesions of the posterior parietal artery territory. As in the case of @entity5785 , @entity244 is a composite of conduction @entity2026 , pure @entity2319 , @entity13523 , and @entity5545 with @entity1055 . The lesion of @entity244 naturally involves the areas of all of these aphasic symptoms. @entity13523 is associated with lesions in the posteroinferior temporal region, and is often associated with watershed @entity1188 of the middle and posterior cerebral arteries. @entity2026 which results from @entity6658 has ambiguous manifestation, and is difficult to be classified into Wernicke-Lichtheim's model. Assessment of its fluency is notoriously difficult. Thalamic @entity2026 is similar to either @entity5547 . It was pointed out that classical @entity751 are still valid as @entity432 , but are insufficient for the purpose of more precise anatomo-clinical correlation.
