Abstract
In order to elucidate the relationship between the lateral hypothalamus, involving the occipito-mesencephalic and quinto-frontal tracts, and body temperature, electric destruction was carried out in various areas of the lateral hypothalamus in 35 chickens. Lesions extending from the anterior commissure to about 480μm rostral to it brought about transient hyperthemia to birds. On the other hand, destructions of all the lateral hypothalamus reaching from about 1.000μm caudal to the anterior commissure to the infundibulum and of the occipito-mesencephalic tract alone induced poikilothermia immediately after operation, which manifested severer symptoms than the former birds. In addition to these facts, the responses of the operated birds to a quick rise and fall of environmental temperature suggest that the area causing poikilothermia may work as a thermal regulator, and that the territory causing transient hyperthermia may be concerned with heat loss only.
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Schedule a callMore From: Nihon juigaku zasshi. The Japanese journal of veterinary science
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