The question to be determined is how far organic aphasia, on account of the alteration of internal speech, determines mental enfeeblement tending more or less to dementia. Vigouroux reviews the various opinions that have been held, e. g. that of Trousseau, who thought that in aphasics there was intellectual impairment; that of Charcot and Ballet, who considered that this impairment varied with the type of mind affected, that is, according as the individual is visual, auditory, etc. The appreciation of the intellectual ability is often a difficulty; there are a number of observations, for instance, in which sensorial aphasia with paraphasia may simulate dementia. Charpentier believes that among old chronic patients in asylums with apparent incoherence are a certain number of cases of paraphasia not understanding what they say, but well knowing what they wish to say.
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