Researchers have found that infrasound, or low-frequency sound waves below 20 Hertz, may explain why some individuals experience eerie feelings in old buildings, often attributed to paranormal activity. A study published in Frontiers in Behavioral Neuroscience involved 36 volunteers who listened to either horror-themed or calming music, with half unknowingly exposed to infrasound for five minutes. The results showed increased irritability and elevated cortisol levels among those exposed to infrasound, who also perceived the music as sadder. Rodney Schmaltz, a psychology professor at MacEwan University, suggests this psychological and physiological reaction to infrasound could clarify the sensations associated with supposed hauntings. Previous studies indicated similar effects of infrasound on anxiety, showcasing its potential to influence emotional responses in various settings.
Why It Matters
Infrasound has been linked to various environmental factors, including natural phenomena like storms and human-made sources like industrial machinery. Understanding its effects on human psychology can shed light on the broader implications of environmental sound exposure on mental health and well-being. Previous research has demonstrated that infrasound can affect not just humans but also animals, as seen in studies with zebrafish and marine life, indicating a significant area of study for both psychological and ecological research. This work highlights the intersection of sound, perception, and emotional response, contributing to a deeper understanding of how our environment shapes our experiences.
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