Yasujiro Sakai

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UNLABELLED This study examined stuttering patterns in five patients with basal ganglia injury. None of the patients had a history of developmental stuttering. Four patients were right-handed; one patient was ambidextrous. Stuttering tests administered to patients assessed sentence repetition, reading aloud, explanations of a comic strip, and conversation.(More)
We studied the human brain response to visual stimulation in which a square area was randomly presented in upper and lower visual fields (VFs). Seven normal volunteers carried out a contrast-based visual search task. Magnetic responses were detected in the bilateral parietal regions at 200-250 ms after stimulus onset. We compared the response latencies and(More)
UNLABELLED We report a male patient with neurogenic stuttering after cerebellar infarction. He had suffered from frontal and thalamus damage and he had exhibited aphasia, but his speech had been fluent until onset of the cerebellar infarction. Results of analysis of speech samples included the following: (1) the patient showed very frequent syllable(More)
To elucidate the precise recovery process and prognosis of language functions in aphasic patients with left putaminal hemorrhage, we investigated 48 aphasic patients classified into 4 groups according to the location and extent of hematoma. The hematoma extended to the corona radiata in all patients, extracapsular in type I (12 cases), to the anterior limb(More)
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