sometimes I feel low frequency vibrations in my testicles lately, a mild vibration---not numbness or tingling. BTW, I ve always noticed The Hum ( a background low frequency noise--about 2% of the population can sense it)when it s very quiet, but it hasn t caused vibration before. Also, I ve been camping lately---one day I noticed no vibration, but two other days I did notice some vibration, and this is in the middle of nowhere. So its not just kids playing subwoofers. Does anyone else experience this, does it have a name, and can anything be done about this?