Study Finds Infrasound Likely Behind Alleged Hauntings, Not Spirits
A recent study published in the journal Frontiers in Behavioral Neuroscience suggests that the eerie sensations often attributed to hauntings may actually be caused by infrasound. Infrasound, which is sound at frequencies below 20 Hz, can be produced by various environmental factors such as vibrating pipes, mechanical systems, traffic, and wind turbines. These low-frequency sounds can increase cortisol levels in saliva and heighten irritability, potentially leading to the perception of a ghostly presence. The study builds on previous research, including work by psychologist Richard Wiseman, who found that people reported more unusual experiences in areas rumored to be haunted, regardless of their awareness of these rumors. These areas often had variations in magnetic fields, humidity, and lighting, which could influence the brain and create sensations of being watched or touched. 
