Aeolius
Adventurer
I feel compelled to work this into my campaigns, now.
"British scientists have shown in a controlled experiment that the extreme bass sound known as infrasound produces a range of bizarre effects in people including anxiety, extreme sorrow and chills -- supporting popular suggestions of a link between infrasound and strange sensations."
More at http://www.cnn.com/2003/TECH/science/09/08/ghosts.sounds.reut/index.html
"British scientists have shown in a controlled experiment that the extreme bass sound known as infrasound produces a range of bizarre effects in people including anxiety, extreme sorrow and chills -- supporting popular suggestions of a link between infrasound and strange sensations."
More at http://www.cnn.com/2003/TECH/science/09/08/ghosts.sounds.reut/index.html