Infrasound: The Hidden Cause Behind 'Haunted' House Experiences

If you’ve ever stepped into a home rumored to be haunted and felt an inexplicable chill or presence, science may have an answer—and it’s not ghosts. A new study published in Frontiers in Behavioral Neuroscience suggests that infrasound—low-frequency vibrations from sources like wind turbines, traffic, or building systems—could be responsible for those unsettling sensations.

Infrasound, which is below the threshold of human hearing, has long been suspected of influencing mood and perception. This research adds to the growing body of evidence that environmental factors, rather than supernatural phenomena, may explain many alleged hauntings.

Infrasound: The Science Behind the Sensation

Infrasound is generated by a variety of everyday sources, including:

• Vibrating pipes and mechanical systems
• Climate control and ventilation equipment
• Traffic and industrial machinery
• Wind turbines and large fans

These low-frequency vibrations can subtly affect the body and mind, potentially inducing feelings of unease, anxiety, or even a perceived presence—hallmarks of many ghost stories.

Historical Research on 'Haunted' Locations

Scientists have long sought natural explanations for reported hauntings. In 2003, psychologist Richard Wiseman of the University of Hertfordshire conducted two landmark studies to test this theory. Participants explored two famously 'haunted' sites:

• Hampton Court Palace in Surrey, England
• South Bridge Vaults in Edinburgh, Scotland

Despite being unaware of the locations’ reputations, subjects consistently reported more 'ghostly' experiences in areas with higher infrasound exposure. Wiseman’s research highlighted environmental variables—such as magnetic field fluctuations, humidity, and lighting—as key factors in these perceptions.

How Environmental Factors Influence Perception

Wiseman hypothesized that variations in magnetic fields might directly impact brain activity. For example, electrical stimulation of the angular gyrus—a brain region involved in spatial awareness—can create the illusion of a presence lurking nearby. This phenomenon may explain why people in certain environments report feeling as though they’re being watched or accompanied by an unseen entity.

While the study does not rule out the possibility of paranormal experiences entirely, it strongly suggests that many 'haunted' sensations stem from measurable, natural phenomena rather than supernatural causes.