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Study: Infrasound likely a key factor in alleged hauntings

Ars Technica • Mon, 27 Apr 2026

Study: Infrasound likely a key factor in alleged hauntings

Low-frequency infrasound (below 20 Hz) can raise cortisol levels in saliva and increase irritability.

What happened?

Low-frequency infrasound (below 20 Hz) can raise cortisol levels in saliva and increase irritability.

Story details

Low-frequency infrasound (below 20 Hz) can raise cortisol levels in saliva and increase irritability.

Why it matters

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Original source

https://arstechnica.com/science/2026/04/that-spooky-sensation-likely-due-to-rumbling-pipes-not-spirits/