Masayoshi Shibata

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The location of corpus callosum injury was investigated using magnetic resonance imaging in 92 patients. The anatomical relationships in the region around the corpus callosum were also evaluated to clarify involvement in the mechanism of corpus callosum injury in 20 normal volunteers. Lesions in the posterior half of the corpus callosum accounted for 80% of(More)
OBJECTIVE Using magnetic resonance imaging (MRI), sequential information regarding the dynamic movement of the cerebrospinal fluid (CSF) from the subarachnoid space and the ventricles to the drainage pathway in response to the CSF pressure was obtained in guinea pigs. In this study, a new mechanical hydrocephalus model in a guinea pig was developed to(More)
BACKGROUND Patients who present with only neurological symptoms and no pain challenge the recognition of acute aortic dissection. RESULTS We report three patients with completely painless acute aortic dissection who presented with left hemiparesis. All patients presented with a left-sided weakness of sudden onset. We suspected an ischemic stroke but(More)
Polarotropism was induced inAdiantum (fern) protonemata grown under polarized red light by turning the electrical vector 45 or 70 degrees. One hour after the light treatment, tropic responses became apparent in many cells as a slight distortion of the apical dome. Changes in the position of the circumferentially-arranged cortical microtubule band (Mt-band)(More)
In joint visual attention, the robot should not only follow a human’s gaze but also identify the gaze target of the human. We believe that mutual adjustment based on the individuality of the robot is a key to identify the gaze target of the human even if the human decides the target unilaterally. In the identification, mismatches of the gaze target are(More)
We report a case of isolated brain stem injury caused by the tentorium cerebelli. A 17-year-old male was admitted to our hospital. Thirty minutes before admission, he was struck by another motorcycle while driving his own motorcycle. The Glasgow Coma Scale (GCS) was 10. He had no extremity weakness and his pupils were normal. CT scan showed no evidence of(More)
We report a patient with completely painless acute aortic dissection who presented with transient left hemiparesis. A 59-year-old male presented to our Emergency Department with left-sided weakness of sudden onset. We therefore suspected cerebrovascular accident. A computed tomography scan of the head did not show any abnormal findings; however, the(More)
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