Meanwhile, 20 percent of those in the infrasound groups reported feeling the temperature rise during their tours, compared with only 5 percent in the ambient-noise group, the researchers reported in their preliminary results.
However, the infrasound-exposed groups did report a greater overall number of spooky experiences, with more people reporting multiple such experiences. The results revealed no difference in the number of people who reported a paranormal experience whether they'd been exposed to infrasound or to ambient noise. During a city ghost festival in 2007, some unsuspecting tour groups were blasted with infrasound as they roamed these creepy passageways.
PARANORMAL AGENCY SERIES
The close is now underground, but in the 1600s, it was a series of narrow alleyways and passages through tall buildings local legend tells of plague victims bricked into the walls. In one experiment, researchers used hidden infrasound generators during ghost tours given at Mary King's Close in Edinburgh, United Kingdom. Lots of things create infrasound, from the wind gusts of air conditioners to earthquakes. Proving this notion has been more difficult. After a particular fan in the building was switched off, the "ghosts" disappeared, the researchers wrote in 1998 in the Journal of the Society for Psychical Research. Ī subsequent experience while cutting metal led Tandy to wonder if sound energy was causing his and his colleagues' inexplicable experiences.
When he summoned the courage to look at the apparition directly, it faded away. After checking that none of the medical gas bottles were leaking, he sat back at his desk, only to see a gray figure emerge in the corner of his vision. On occasion, employees reported spooky sensations and the feeling of a presence in the room Tandy dismissed all of this until one night when he began to feel cold and gloomy. In 1998, Vic Tandy, a researcher at Coventry University in England, joined with fellow Coventry professor Tony Lawrence to write a paper based on Tandy's own spooky experiences at a medical equipment manufacturing shop. One plausible explanation for haunted houses is that people are responding to something in the environment - but that the "something" is far more mundane than restless spirits.Ī possible culprit is infrasound, or sounds just below the typical human hearing threshold of 20 hertz.
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