Tetsuro Hori

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Neuronal thermoresponsiveness in the preoptic and anterior hypothalamic (PO/AH) region of a bird and a mammal were compared in vitro by recording the activity of 48 units from ducks and 37 units from rats in tissue slices subjected to temperature changes. Warm-responsive units were found in similar proportions in duck and rat PO/AH slices. The average(More)
Recently, we have often heard the terms "Wearable computing" and "Ubiquitous computing". Our expectation for the future of such new computing environments is growing. One of the characteristics of these computing environments is that they embed computers in our lives. In such environments, digitization of personal experiences will be made possible by(More)
In ``Wearable computing'' environments, digitization of personal experiences will be made possible by continuous recording using a wearable video camera. This could lead to ``automatic life-log application''. It is evident that the resulting amount of video content will be enormous. Accordingly, to retrieve and browse desired scenes, a vast quantity of(More)
Cholecystokinin (CCK) is deeply involved in the control of learning and emotional behaviors. The authors characterize the behavioral properties of Otsuka Long Evans Tokushima Fatty (OLETF) rats, which lack the CCK-A receptor because of a genetic abnormality. In the Morris water-maze task, the OLETF rats showed an impaired spatial memory. In the inhibitory(More)
The effects of local osmotic changes on the activity of preoptic thermosensitive neurons were investigated in rat hypothalamic slices in vitro. Thirty-seven (53%) of 70 neurons recorded from the medial preoptic nucleus (MPO) (66% of thermosensitive neurons and 12% of thermally insensitive neurons) changed their firing rates in response to alterations in(More)
In conscious Pekin ducks adapted to hypertonic saline (1.9%) as drinking water, steady state secretion of the salt glands was established by continuous intravenous salt loading and the effects of hypothalamic thermal stimulation on salt gland activity and on the plasma concentrations of arginine vasotocin (AVT) and angiotensin II (AII) were observed.(More)
1. Subcutaneous or intrahypothalamic injections of capsaicin produce hypothermia in the neonate rat. Repeated injections with increasing doses of capsaicin result in unresponsiveness to this drug (capsaicin-desensitization). 2. Young rats aged 8–10 days which had received serial injections of capsaicin solution (a cumulative dose of 4.63 mg per animal) or(More)
The effect of heating and cooling in the midbrain on the unit activities of midbrain raphe neurons in the rat was observed. Out of 24 raphe units studied, 14 units responded to a rise in midbrain temperature with an increased rate of firing. The remaining 10 units did not respond to temperature changes between 34 and 41°C. The result is consistent with the(More)