Study finds infrasound the likely horror in hauntings

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BoingBoing

Noise below the range of human hearing from old pipes and mechanical systems can induce stressful sensations, according to a study published by Canadian researchers in Frontiers in Behavioral Neuroscience. The findings offer a compelling scientific explanation for why I feel ill-at-ease in the basement of the abandoned 19th-century sanitarium, built over an old cemetery, that I've been squatting in rural West Pennsylvania.