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OBJECTIVES To identify determinants of recurrence after ischemic stroke in the Japanese population. MATERIALS AND METHODS We enrolled 885 patients with acute ischemic stroke that had been admitted to our community hospitals. A total of 831 cases were followed for 1 year after the index stroke. Patients were assigned to one of the ischemic stroke subtype(More)
5-Aminolevulinic acid (ALA) has been successfully used to confirm the target tumor tissues obtained during stereotactic biopsy. The authors report their experience with 2 patients who underwent stereotactic biopsies of thalamic malignant lymphoma and pontine glioma utilizing 5-ALA. Intraoperatively, the tumor specimens fluoresced, allowing for confirmation(More)
We reported a sixty-year-old man who developed acquired stuttering after a brainstem infarction. Infarctions were detected in the midbrain and upper pons. Neurogenic stuttering of this patients indicated that the midbrain and upper pons could be lesion sites responsible for acquired stuttering. We speculated that the reticular network extending from the(More)
A large negative deflection with a latency of 3 ms was observed in the auditory brainstem response (ABR) waveforms of some patients with peripheral profound deafness. This deflection was termed the N3 potential. In this paper, we review patients with the N3 potential and discuss the characteristics of abnormal ABR waveforms. The origin of the N3 potential(More)
In a pilot study, EEG changes during odor stimulation were evaluated by coherence analysis. Ten normal adults were studied. Simultaneous recordings of 16 EEG channels with and without odor stimulation were stored on magnetic tape for further processing. EEG signals were analyzed using a signal analyzer. Coherence spectra were calculated between all possible(More)
The auditory brainstem responses (ABRs) obtained from 28 normal healthy adults were studied using the ipsilateral and contralateral recordings from the positions of vertex and each mastoid to monaural stimulation. Each wave of ABRs recorded by ipsilateral and contralateral derivations to stimulation site showed slightly significantly differences. Comparing(More)
A 69-year-old woman was admitted to our hospital because of disturbed consciousness. She awoke to a solid mass in her left breast, but it had been present for about 20 years. On arrival to our hospital, she was comatose, and Babinski's reflexes were present bilaterally. She had no paresis or neck stiffness. Her left breast contained a 10 cm x 12 cm node(More)
In a pilot study, EEG changes during odour administration were evaluated by coherence analysis. Ten normal adults were studied. Simultaneous recordings of 16 EEG channels with, and without, odour administration were stored on magnetic tape for further processing. EEG signals were analysed using a signal analyser. Coherence spectra were calculated between(More)
In the last few years, we have studied ocular reflexes caused by tilting stimulations in test subjects placed in an upright sitting position on a chair apparatus which tilts continuously. In healthy persons, a weak nystagmus can be observed, and involves a nystagmus of minor amplitude and showing a small number of beats. The actual incidence of nystagmus in(More)