Accession Number : AD0684477

Title :   THE PERFORMANCE OF SMALL MAMMALS AT LOW BODY TEMPERATURES.

Descriptive Note : Final rept. 1 Sep 64-31 Dec 68,

Corporate Author : GEORGETOWN UNIV WASHINGTON D C DEPT OF BIOLOGY

Personal Author(s) : Panuska,Joseph Allan

Report Date : 01 FEB 1969

Pagination or Media Count : 46

Abstract : Trained performance, therefore, stubbornly persists through a large depression in body temperature. Nevertheless, it is a temperature-dependent phenomenon, with suppression occurring in a non-linear fashion. Trained performance stops within narrow body temperature ranges for individuals of the same species performing the same task, and within a wider but still narrow range for the six species studied. The report also contains brief summaries of research on blood pressure, heart rate, fractional distribution of cardiac output to the brain, righting reflexes, and spontaneous locomotor activity during progressive hypothermia in the unanesthetized rat. In addition, the report summarizes studies on the effect of Dimethylsulfoxide on cooling rates, oxygen consumption, behavioral temperature regulation, heart rate, and cardiac arrest during progressive hypothermia in unanesthetized small mammals. The distribution of Dimethylsulfoxide in the tissues of the unanesthetized hypothermic rat is also discussed. (Author)

Descriptors :   (*HYPOTHERMIA, *BEHAVIOR), BODY TEMPERATURE, MAMMALS, LEARNING, BLOOD PRESSURE, BLOOD CIRCULATION, REFLEXES, OXYGEN CONSUMPTION, HEART, PATHOLOGY

Subject Categories : Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE