| Facial thermal input in the caudal trigeminal nucleus of rats reared at 30 degrees C. | |
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MedLine Citation:
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PMID: 7182476 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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1. Rats reared from birth in air at 30 degrees C showed a decreased ability to maintain colonic temperature when exposed to 10 degrees C as compared with rats reared at 20 degrees C. This difference was not due to physical factors affecting heat loss, such as surface area or fur thickness. 2. In anaesthetized rats extracellular recordings were made in trigeminal nucleus caudalis from higher order neurones with input from facial cold and warm receptors. A systematic search on a grid pattern showed there was no difference between heat-reared and control rats in facial receptive fields or in the abundance, extent and somatotopic distribution of thermal neurones in the nucleus. In both groups almost all the neurones were excited only by facial cooling. 3. When single cold neurones were tested quantitatively by the application of controlled temperature changes to their receptive fields on the face there was no difference in the static temperature/discharge rate relationship between the two groups of rats. 4. The results suggest that the observed difference in ability to regulate body temperature is not attributable to differences in skin-temperature reception at the level of the trigeminal nucleus. |
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Authors:
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N J Dawson; R F Hellon; J G Herington; A A Young |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of physiology Volume: 333 ISSN: 0022-3751 ISO Abbreviation: J. Physiol. (Lond.) Publication Date: 1982 Dec |
Date Detail:
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Created Date: 1983-07-08 Completed Date: 1983-07-08 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 0266262 Medline TA: J Physiol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 545-54 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Body Temperature Body Temperature Regulation* Cold Temperature Face / physiology Hot Temperature Male Neurons / physiology Rats Rectum Skin Temperature* Time Factors Trigeminal Caudal Nucleus / physiology* Trigeminal Nucleus, Spinal / physiology* |
| Comments/Corrections | |
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