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Approved For Release 2008 RET CIA-RDP96-00788R001300020001-6 ST-CS-01-169-72 July 1972 PART A - Temperature 1. (U) An increase in body temperature decreases the body water level and creates a salt-water imbalance. With a large intake of water, but little replacement of sodium chloride, painful spasms of the skeletal and abdominal muscles may develop as may also faintness, weakness, nausea, and vomiting. With an internal temperature above 41 degrees C or below 31 degrees C, brain function is usually impaired. Irreversible damage to the skin occurs at about 44-45 degrees C (46,47). 2. (U) The sensitivity and tolerance for temperature changes is different for certain races. Negroes have a greater tolerance for humid heat than Caucasians, and conversely, Negroes are more susceptible te injury from cold stress than Caucasians. 3. (C/NFD) It is believed that the use of temperature manipulation as a technique to influence human behavior is practical. In order to he effective it would seem necessary to apply this technique to individuals or smail groups that are already under one's influence such as prisoners'of war. The application of unnatural temperature in field situations appear to be most difficult. Further, there appears to be very little applicable research in the USSR in - this area other than some isolated work in the areospace field. Tt may be concluded that temperature fluctuations could be used for altering human behavior, but would probably not be as useful as other available methods. PART B - Atmospheric Conditions 1. (C/NFD) There has been some work reported on the physiological or psychological effects of atmospheric or geophysical parameters (48-51). The works referenced here are free world but there is little doubt that the Soviet Union has investigated similar effects especially in relation to their space program, The utilization of any of the techniques to alter human behavior by changing atmospheric conditions seems remote for field application. These techniques, like temperature effects, are more suitable for controlled groups or individuals, ° ‘ 2. (U) An increase of 0,2 percent carbon dioxide doubles the volume of air breathed. Breathing becomes deeper, more rapid, and eventually violent. Depletion of oxygen or the increase of carbon dioxide decreases auditory sensitivity as well as visual sensitivity. Ten percent of oxygen for 15 to 30 minutes sometimes 16 NO FOREIGN DISSEMINATION SECRET (This page is CONFIDENTIAL) RP proved Por release SOO OO TO. CIA RDP OO U0 CORUOTSOUU COCO TTD