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Approved For Release 2006/ AP IBENTIAROP 96-00788R001300020001-6 ST-CS-01-169-72 July 1972 10. (U) In chronic experiments with ultrasound of moderate intensity, Onanov (280) observed changes in animal behavior (apathy, lassitude, refusal of food, emaciation, trophic ulcers and loss of fur). Death due to stress with adrenal failure has been reported in sheep subjected to ultrasonic irradiation at high intensities similar to those used in the treatment of human auditory disease. Stress due to ultrasound of lower intensities has also been claimed (281). SECTION V - CONCLUSION 1. (C/NFD) Although the above discussion on Soviet research in the areas of biological (psychological) properties of sound was brief, it expresses an awareness on the part of the Soviets of the potential harmful effects on humans. Some Soviet research has indicated that the behavioral changes in man and animal are of prime importance. 2. (C/NED) According to Maire (257) scientists from Warsaw Pact countries have evinced interest in French sonic and ultra- sonic sirens and pneumatic compressors for acoustic wave generation. Therefore, the Soviets may be expected to continue research on small siren powered emitters for mob control and on larger acoustic arrays for area denial and anti-infiltration application. 99 (Reverse Blank) NO FOREIGN DISSEMINATION CONFIDENTIAL Approved For Release 2003/09/10 : CIA-RDP96-00788R001300020001-6