◆ SpookStack

SECRET Approved For Release 2003/09/10 : CIA-RDP96-00788R001300020001-6 ST-CS-01-169-72 July 1972 (4) The EEG appears to be a reliable indicator of consciousness but not of sleep or wakefulness... (5) Not every subject shows truly periodic EEG activity... (6) Photic driving of the EEG by periodic flicker.is a well known phenomenon although many subjects do not show the effect... (7) The ease with which photic driving can be produced has not yet been correlated with emotional patterns or with sleep-wakefulness cycles. However, the visual illusions which result from flicker may be the basis for a highly predictable method of measuring anxiety. (8) The production of flicker effects is not limited by the retina but appears to be limited by some process in the central nervous system which converts discontinuous activity to continuous activity (i.e. flicker to fusion)... (9) Flickering of other sensory modalities may influence. the ease of production of the desired effects of visual flicker. Auditory flicker is particularly promising in this regard. (10) Stress, comparable to that produced in actual combat, may be needed to completely elucidate the practical effects of flicker as far as military applications are concerned. (11) It appears likely that high intensities of light will be more effective in producing the desired effects of flicker although much remains to be done to determine the optimum light and dark intervals, background contrasts, and effects of stray light. As will be depicted later, the areas above where no definite conclusions were drawn (4,7, and 10) is the exact area of high Soviet interest. L.1I. Kuproyanovich (164) describes in some detail Soviet efforts in relating EEG with sleep and memory as. well as the areas of photic drive and the synchronization of flicker frequency and alpha wave rhythm. At the University of Leningrad work has been done on the effects of strobe lights flashing at a different rate for each eye. One rhythm for the left eye and another for the right eye brings on measurable brain wave patterns. Lights flickering at different rates on each eye cause a sensation of rotation and a very unpleasant feeling in the viewer. It might be mentioned that the Soviets are thinking of using the "seasickness" application of flashing lights in a telepathic mode (222). 80 NO FOREIGN DISSEMINATION SECRET (This page is UNCLASSIFIED) OC OT OT