Selective preservation of oral spelling without semantics in a case of multi-infarct dementia.
A 70 year old retired van driver, with a diagnosis of multi-infarct dementia, showed features associated with transcortical sensory aphasia, with excellent repetition, a severe anomia, poor semantic comprehension and fluent speech. He was able to spell orally words which he did not understand, as well as nonwords; he wrote to dictation only after first spelling the words orally. Some of his spellings provided evidence for a dissociation between semantics and the graphemic output lexicon, the application of sub-word rules and partial lexical knowledge. These findings are interpreted in terms of a cognitive neuropsychological model.
Department of Speech, University of Newcastle upon Tyne.
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D000368:Aged; D001037:Aphasia / Q000523:psychology; D001307:Auditory Perception / Q000502:physiology; D002561:Cerebrovascular Disorders / Q000523:psychology; D015161:Dementia, Multi-Infarct / Q000523:psychology*; D006801:Humans; D007802:Language; D008297:Male; D009483:Neuropsychological Tests; D011932:Reading; D012660:Semantics