Well this may be related
What’s Up With That? Phantom Cellphone Vibrations
"There are two types of receptors in the skin that detect vibrations: Meissner’s corpuscles, which specialize in slow vibrations, and Pacinian corpuscles, which specialize in higher-frequency vibrations. Most cellphones vibrate at between 130 and 180 hertz, which falls in between the sweet spots of the two types of receptors. Those vibrations probably activate both types of receptors, but probably activate the Pacinian corpuscles more, Bensmaia says.
Like Laramie, Bensmaia thinks phantom vibrations are a result of the brain’s penchant for filling in the gaps to find patterns. A visual equivalent, he suggests, is seeing the outlines of furniture when you walk through your house in near-total darkness, or seeing the
Invalid Link Removed (it’s hard to see at first, but once you detect the pattern it’s almost impossible not to see it)."
It seems we have corpuscles to detect vibrations, but it may be a correlation to what our ears hear to what our brain detects as pitch. Our brains may be filling in pitch here. It'd be an interesting thing to try out.
Some clubs are just doing headphones, maybe they'll add these harnesses for extra charge.