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Approved For Release 2003/09/10 : CIA-RDP96-00788R001300020001-6 CONFIDENTIAL . ST-CS-01-169-72 July 1972 results in a, hearing deficit for several hours. With severe or prolonged anoxia there may be nausea, vomiting, extreme weakness, and eventually convulsions and cardiac failure (52). Perhaps the applicable symptoms of anoxia to this report are the homeo-— static inbalances in the brain: loss of ability to carry on complex activities, restlessness, loquacity, delirium, confusion, and unconsciousness. 3. (U) Intermittent exposures to negatively ionized air produces a sedating effect on humans. There are some researchers who believe that positively ionized air causes irritation and anxiety which is applicable to altering behavior. PART C - Olfactory Phenomena 1. (U) Seven primary odors have been identified; they are campho- raceous, musky, floral, minty, pungent, putrid, and ethereal (53). From the seven primary odors, every known odor can be made by mixing them in certain proportions. 2. (U) Man expresses pleasure or displeasure to various odors. If the smell is foul or irritating enough, man will attempt to avoid it. If.escape is hindered or if odors are used with surprise they may elicit certain behavioral changes in the individual. Odors are suitable for use in controlled situations and in the field. For these reasons odors will be discussed more fully later in this report. PART D - Light 1. (U) Although it is customary to specify the wavelength range of visible light as lying between 400 and 750 millimicrons (m1), never- theless, with sufficient energy, the eye can be stimulated up to 1050 mu. Also, the fovea (phototopic vision) can be stimulated down to about 320 ms. It is thought that 1150-1200 mu marks the limit at which radiant energy would cease to be seen and would be readily felt as heat (54). 2. (U) Yellow light has maximum effect on the retina and is most effective in eliciting photophobia. Non-rhythmic bright lights can interrupt or prevent sleep. It has been claimed that if sensory stimulation is sufficient, sleep can be prevented even if fatigue is carried to the point of death (52). The physiological 17 NO FOREIGN DISSEMINATION (This page is UNCLASSIFIED) Approved For Release 2003/09/10 : CIA-RDP96-00788R001300020001-6