Under this heading is usually discussed a varied set of conditions that have the common feature of only affecting verbal performance in a given modality (auditory or visual, oral or graphic) while the general level of language functioning is unimpaired. The latter condition is very rarely fulfilled since at least a mild aphasic disturbance is usually present. The existence of deficits specific for comprehension or naming of some categories of words but not of others have also been reported.
KeywordsHull Convolution Agglomeration Stim Dick
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