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Unit activities of the preoptic region during local heating and cooling Teruo Nakayama 1 1Department of Physiology, Nagoya University School of Medicine pp.106-108
Published Date 1963/2/15
DOI https://doi.org/10.11477/mf.2425906275
  • Abstract
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 A thermally sensitive unit has been located in the preoptic region. In this study, attention was focused upon the discharge pattern during rising and falling temperature.

 1. The discharges of preoptic neuron increased and decreased gradually with a slow rise and fall of one tenth of a degree centigrade, respectively. In some units, discharges per sec. were proportional to changes of temperature only in a limited range and the unit kept fairly constant rate of firing regard'ess of further change of local temperature.

 2. A unit was found in the preoptic region, the activity of which does not depend on the temperature level but is proportional to the rate of temperature change.

 3. A paradoxical response was recorded at the beginning of rapid change of temperature. The discharge decreased at the very beginning of temperature rise. Similarly, but in an opposite way, a transient increase of discharge was observed during a fall in local tempe-rature.


Copyright © 1963, THE ICHIRO KANEHARA FOUNDATION. All rights reserved.

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電子版ISSN 1883-5503 印刷版ISSN 0370-9531 金原一郎記念医学医療振興財団

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