A new study suggests that infrasound—low-frequency sound below human hearing—can raise stress hormone levels and alter mood, potentially explaining some 'haunted' sensations in old buildings.

A new study suggests that infrasound — low-frequency vibrations from sources like ageing pipes — may explain feelings often attributed to ghosts. Researchers found exposure to 18Hz sound raised ...

Very low-frequency sounds, which humans cannot hear but can lead to high stress hormone levels in the body, could be an explanation for “haunted” locations, a new study finds. Such sounds below 20 ...