"Low-frequency infrasound, below 10 Hz, can raise cortisol levels in saliva and increase irritability, leading to feelings of unease often mistaken for ghostly presences."
"Research conducted by Richard Wiseman showed that subjects reported more odd experiences in places rumored to be haunted, regardless of their awareness of those rumors."
"The areas where participants felt sensations of being watched or touched had markedly lower humidity, suggesting that these experiences are responses to normal environmental factors."
"Wiseman hypothesized that stronger magnetic fields may affect the brain, similar to how electrical stimulation can create the sensation of another person mimicking one's movements."
Low-frequency infrasound, below 10 Hz, can elevate cortisol levels and increase irritability. Sensations of ghostly presences in haunted locations may stem from environmental factors like vibrating pipes or wind turbines. Research by Richard Wiseman revealed that subjects reported more unusual experiences in areas rumored to be haunted, influenced by local magnetic fields, humidity, and lighting. In a study at Mary King's Close, many participants felt cold or watched, correlating with lower humidity levels, indicating that these experiences are responses to environmental stimuli rather than paranormal activity.
Read at Ars Technica
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