Subliminal Acoustic Manipulation Of Nervous Systems:
Abstract:
In human subjects, sensory resonances can be excited by subliminal atmospheric acoustic pulses that are tuned to the resonance frequency. The 1/2 Hz sensory resonance affects the autonomic nervous system and may cause relaxation, drowsiness, or sexual excitement, depending on the precise acoustic frequency near 1/2 Hz used. The effects of the 2.5 Hz resonance include slowing of certain cortical processes, sleepiness, and disorientation. For these effects to occur, the acoustic intensity must lie in a certain deeply subliminal range. Suitable apparatus consists of a portable battery-powered source of weak subaudio acoustic radiation. The method and apparatus can be used by the general public as an aid to relaxation, sleep, or sexual arousal, and clinically for the control and perhaps treatment of insomnia, tremors, epileptic seizures, and anxiety disorders. There is further application as a nonlethal weapon that can be used in law enforcement standoff situations, for causing drowsiness and disorientation in targeted subjects. It is then preferable to use venting acoustic monopoles in the form of a device that inhales and exhales air with subaudio frequency.
http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA229178
Interesting background…enter “hendricus” in search box
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Something similar must have been used during the Republic of Texas standoff out here in April-May 1997…supposedly such disturbing low frequencies were used through loud speaker devices that it caused a couple of folks living just beyond the one-mile “evacuate or else” zone to develop hearing and mental health issues to the point where they themselves had to leave. Since we had decided to go shopping that day and were not allowed back in to the POA after it started, maybe that was a good thing or else we would also have been affected (we lived a little over a mile from the standoff location). But we did visit McDonald Observatory during the event and heard all kinds of extremely loud low frequency (but not that low) sounds (20 Hz or so) and then high frequency sounds coming at the Observatory from several miles away, in the midst of the standoff.