Some ear Doctors do VNG's, I was lucky enough to have one near me that did, but he suggested sending me to have more advanced testing done. But if your ear is bothering you, I would see an ear doctor or ENT just to make sure all is good there. A VNG tests my neurologist has given me with my migraines and my concussion to see if maybe the problem was coming from my ears or eyes and not my brain. You can google it there are videos that show what they do.