Isamu Nakamura

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Ten cats were stimulated twice a day in the lateral amygdala with low-frequency stimulation of about 3 Hz until generalized convulsion occurred. After the completion of kindling, the longest interpulse interval required for provocation of generalized convulsion (pulse-interval threshold) was determined in each subject. The pulse-interval threshold was 1300(More)
The Belle measurement of |V ub |, one of Cabibbo-Kobayashi-Maskawa matrix elements, from inclusive semileptonic b→u decay was summarized. In the talk two methods are presented. One uses inclusive energy distribution of electrons from B semileptonic decays. The other features a so-called " full-reconstruction " method to get pure B meson samples with more(More)
We determined if pattern visually evoked cortical potentials (P-VECPs) in pigmented rats would reveal visual toxicity induced by a drug even when in cases of repeated doses. We obtained appropriate conditions of P-VECPs measurement; the spatial frequency, 0.16 cycle/degree; the mean stimulation luminance, 25 cd/m(2); and the stimulation frequency, 2 Hz.(More)
We determined whether visually evoked cortical potentials obtained using checker patterns (P-VECPs) and albino rats would reveal visual damage induced by ethambutol (EB). Findings were compared in cases of detection of visual damage between by P-VECPs and by flash visually evoked cortical potentials (F-VECPs). Twelve adult albino male Crj:CD(SD)IGS rats(More)
To assess the development of kindling effect induced with low frequency electrical stimulations, we stimulated the lateral amygdala (AM group, 5 cats) and the dorsal hippocampus (HP group, 5 cats) bipolarly, once a day, with 2 mA base to peak, biphasic 1 msec square-wave pulses. In each stimulation we measured the longest inter-pulse interval required for(More)
Cats were stimulated in the lateral amygdala with low-frequency square-wave pulses. All subjects were kindled until generalized convulsion occurred. During the kindling process, a prolongation of the interpulse interval and a reduction of the number of pulses required for the provocation of afterdischarges were observed. We refer to this phenomenon as the(More)
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