Human Perception

[huxley]

I was wondering if anyone has ever heard of a study being done on the effects of infrasound on human vision?

Cheers

[Yowie bait]

There was that test someone linked on here where they zapped a bunch of people with infrasound and noted the effects. People were affected in all different ways. I cant remember anything about vision but i reckon it could if it can mess with your mind?

[huxley]

I've felt the paralyzing fear.

The first time was after I heard them speak. I've mentioned it on another thread.

A very deep, short, mumbled sentence followed by a shorter deep mumble with the same cadence of a question then an answer while I was reading inside my car about a days drive south from Mount Kosciuszko

I thought Yowies were dreamtime stories at that point and didn't even consider them as the source until over a year later

The reason I ask is because I'm looking for a scientific reason as to why people are reporting yowies as ghostlike or difficult to define

The way I see it, it must either be technology or ability

I may be pushing the content for this area of the forum, and if I am, I apologize

Any input is much appreciated

[ChrisV]

I don't know personally of any research but I believe that people with an open mind to things are more prone to these interactions.
I liken it to someone who has a strong perception ability and can read things clearer than most - you know the people who can sense when someone is staring at them, pick up spiritual vibes and the like.
I believe there are people who just walk thru the bush completely oblivious to these kind of intricate things and have no idea what is going on around them.

[huxley]

Thanks Chris, I agree 100 percent.

Maybe there is common denominator between the two camps of paranormal and yet unacknowledged primitive people theories that we've been glossing over?

[Shazzoir]

There have been some studies done on infrasound, in general and in relation to that generated by wind turbines. Summaries presented below seem to not address what we suspect could be human 'dread' responses to infrasound: however, the frequency levels of infrasound of interest to us may not be generated by ethical human studies (Hitler allegedly trialled sound as a weapon on German troops).

But first, some relatively innocuous effects of infrasound exposure...

1. Physiological and Psychological Effects of Infrasound on Humans
Henrik Møller
First Published March 1, 1984 Research Article

Abstract

Sixteen subjects were exposed for three hours to inaudible infrasound, audible infrasound, traffic noise and a quiet control condition, while they performed various psychological tasks. Some cardiovascular and hearing parameters were recorded and after the experiments the subjects answered a questionnaire concerning their experiences during the noise exposure.

The most conspicuous effect of infrasound was a high rating of annoyance and a feeling of pressure on the ear at less than 20 dB above the threshold of hearing. No influence on the cardiovascular system was seen and the performance only deteriorated in one of nine tasks. Infrasound below the threshold had no effect.

2. Infrasound From Wind Turbines Could Affect Humans
Alec N. Salt, James A. Kaltenbach, Alec N. Salt, ...
First Published July 19, 2011 Research Article

Abstract

Wind turbines generate low-frequency sounds that affect the ear. The ear is superficially similar to a microphone, converting mechanical sound waves into electrical signals, but does this by complex physiologic processes. Serious misconceptions about low-frequency sound and the ear have resulted from a failure to consider in detail how the ear works. Although the cells that provide hearing are insensitive to infrasound, other sensory cells in the ear are much more sensitive, which can be demonstrated by electrical recordings. Responses to infrasound reach the brain through pathways that do not involve conscious hearing but instead may produce sensations of fullness, pressure or tinnitus, or have no sensation. Activation of subconscious pathways by infrasound could disturb sleep. Based on our current knowledge of how the ear works, it is quite possible that low-frequency sounds at the levels generated by wind turbines could affect those living nearby.


3. Title : The Effects of High Level Infrasound (Not terribly relevant, but worth a read purely on the space mission aspect)

Corporate Author : AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH

Personal Author(s) : Johnson, Daniel L.

Abstract

This paper will attempt to survey the current knowledge on the effects of relative high levels of infrasound on humans. While this conference is concerned mainly about hearing, some discussion of other physiological effects is appropriate. Such discussion also serves to highlight a basic question, 'Is hearing the main concern of infrasound and low frequency exposure, or is there a more sensitive mechanism?'. It would be comforting to know that the focal point of this conference is indeed the most important concern. Therefore, besides hearing loss and auditory threshold of infrasonic and low frequency exposure, four other effects will be provided. These are performance, respiration, annoyance, and vibration.

Read it here: http://www.dtic.mil/cgi-bin/GetTRDoc?Lo ... =ADA081792

Now we're getting further in...

4. http://journals.sagepub.com/doi/pdf/10. ... 2041456828

Results were interesting: "Psychological Effects of Infrasound
By analyzing their answers we found: All the subjects felt uncomfortable and 8 persons said they had experienced the same feelings as travelling on vehicles or trains, two of them said they had experienced this feeling elsewhere. No one felt
nauseated or carsick. Nine of them felt pressure in their ears. Six persons felt headachy and fretful. Five people felt tired and troubled in this room.


But now, let's get to the crux of things....


5. High-Intensity Acoustics for Military Nonlethal Applications

http://search.proquest.com/openview/436 ... r&cbl=7561

Of most interest:


This is a good read and one of my faves - lots here on nausea and fear responses. If you only read one thing, make it this one:

6. Sonic Warfare: Sound, Affect and the Ecology of Fear

https://books.google.com.au/books?hl=en ... ar&f=false



If our hairy folk are capable with their massive lungs and chest structure, of creating tones such as those described, you may assume, as I do, that infrasound is devastatingly effective at getting pesky humans to shove off, pronto.

What some may attribute to paranormal aspects, I'm a believer in accepting there are as yet poorly understood responses to sound of natural but non-human origins. Interpret that as you may

Happy reading

Shazz

[Shazzoir]

Not vision-related, but as always, a balanced view is often wise... some excerpts from Wikipedia's "brown note" page:

"Physiological effects of low frequency vibration

Jürgen Altmann of the Dortmund University of Technology, an expert on sonic weapons, has said that there is no reliable evidence for nausea and vomiting caused by infrasound.[1]

Air is a very inefficient medium for transferring low frequency vibration from a transducer to the human body.[4] Mechanical connection of the vibration source to the human body, however, provides a potentially dangerous combination. The U.S. space program, worried about the harmful effects of rocket flight on astronauts, ordered vibration tests that used cockpit seats mounted on vibration tables to transfer "brown note" and other frequencies directly to the human subjects. Very high power levels of 160 dB were achieved at frequencies of 2–3 Hz. Test frequencies ranged from 0.5 Hz to 40 Hz. Test subjects suffered motor ataxia, nausea, visual disturbance, degraded task performance and difficulties in communication. These tests are assumed by researchers to be the nucleus of the current urban myth.[5][6]

The report "A Review of Published Research on Low Frequency Noise and its Effects" contains a long list of research about exposure to high-level infrasound among humans and animals. For instance, in 1972, Borredon exposed 42 young men to tones at 7.5 Hz at 130 dB for 50 minutes. This exposure caused no adverse effects other than reported drowsiness and a slight blood pressure increase. In 1975, Slarve and Johnson exposed four male subjects to infrasound at frequencies from 1 to 20 Hz, for eight minutes at a time, at levels up to 144 dB SPL. There was no evidence of any detrimental effect other than middle ear discomfort. Tests of high-intensity infrasound on animals resulted in measurable changes, such as cell changes and ruptured blood vessel walls.

In February 2005 the television show MythBusters used twelve Meyer Sound 700-HP subwoofers—a model and quantity that has been employed for major rock concerts.[7][8] Normal operating frequency range of the selected subwoofer model was 28 Hz to 150 Hz[9] but the 12 enclosures at MythBusters had been specially modified for deeper bass extension.[10] Roger Schwenke and John Meyer directed the Meyer Sound team in devising a special test rig that would produce very high sound levels at infrasonic frequencies. The subwoofers' tuning ports were blocked and their input cards were altered. The modified cabinets were positioned in an open ring configuration: four stacks of three subwoofers each. Test signals were generated by a SIM 3 audio analyzer, with its software modified to produce infrasonic tones. A Brüel & Kjær sound level analyzer, fed with an attenuated signal from a model 4189 measurement microphone, displayed and recorded sound pressure levels.[10] The experimenters on the show tried a series of frequencies as low as 5 Hz, attaining a level of 120 decibels of sound pressure at 9 Hz and up to 153 dB at frequencies above 20 Hz, but the rumored physiological effects did not materialize.[10] The test subjects all reported some physical anxiety and shortness of breath, even a small amount of nausea, but this was dismissed by the experimenters, noting that sound at that frequency and intensity moves air rapidly in and out of one's lungs. The show declared the brown note myth "busted."

Source: https://en.wikipedia.org/wiki/Brown_note

Shazz

[Wolf]

Tim 'Connbo' Baker said once that infrasound can cause hallucinations. He has done multiple experiments in the lab and discusses it in one of the Bigfoot Outlaws shows.