Scientific Study Reveals Infrasound as Source of Eerie Feelings in Old Buildings
A study conducted by psychologists Rodney Schmaltz and Kale Scatterty from MacEwan University in Edmonton, Canada, has provided a scientific explanation for the eerie feelings often experienced in old buildings. The research suggests that infrasound, low-frequency sound waves below the threshold of human hearing, may be responsible for these sensations. The study involved participants listening to audio clips with hidden subwoofers introducing infrasound at random intervals. Participants reported increased irritability and perceived the music as sadder when exposed to infrasound. The study also measured cortisol levels, a stress hormone, which rose following infrasound exposure. These findings suggest that infrasound, produced by everyday infrastructure like traffic and ventilation systems, could be a significant factor in the unsettling atmosphere of supposedly haunted locations. 
