PubMed · 6201775
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G Levi, F Piperno, B Zollinger. 1984. [Specific communication disorders in developmental dysphasia].. https://pubmed.ncbi.nlm.nih.gov/6201775/
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Hemisphere specialization for language was studied in 10 children with expressive developmental dysphasia (DD) (mean age 10 years 4 months) submitted to a dichotic listening task (in a word free-recall task and forced-attention task) and a finger tapping/vocalization dual-task paradigm. A nonsense shape dichaptic task was also introduced to control right hemispheric processing. Performances of dysphasic children were compared to those obtained from 15 normal children. The results showed that controls had a right ear advantage in free-recall (words) dichotic listening task and a significant right ear advantage in forced-right-attention task, with a change in ear asymmetry as a consequence of instruction. In the dysphasic group we observed a significant right ear advantage in the free-recall dichotic listening task and no change in ear asymmetry during forced right or forced left condition. Results in time sharing paradigm and nonsense dichaptic task are more difficult to interpret, because there was no interaction between group and condition. These results cannot support a complete left hemisphere dysfunction in developmental dysphasia.
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Authors report about a girl with Landau-Kleffner syndrome. After the history of normal developmental milestones at the age of five-and-half year the patient had absence seizures, and marked receptiv and expressiv aphasia developed gradually. She was found to have Landau-Kleffner syndrome. This entity initially can be regarded as deafness or psychiatric reaction. The seizure activity usually has a favorable outcome, the aphasia can fluctuate for years. The improvement is more likely in promptly treated cases.