Thanks for the explanation. I didn't know these things, but then I often say here what the limits on my knowledge are, and I am the first to admit that they are substantial.
I see so many posts here, such as in the thread on the Chauvin trial and I have to wonder how many of those posts are from trained lawyers or police officers because they are stated as known fact rather than opinion. It is the same story with the threads on COVID-19. How many posting there are medical people who really know what they are talking about?
The threads I can speak with authority on would be regarding certain aspects of technology (certainly not all of it) and those areas I have first hand experience in such as something medical that my wife may be dealing with, or my experiences with the VA. This is a relatively narrow scope, considering the breadth of subjects discussed here.
So I do appreciate your taking the time to explain what you meant. It wasn't that you weren't clear, but that it wasn't clear to me without the work experience you have.
I did google ENG, and the context of this seems to fit the discussion:
https://www.webmd.com/brain/what-is-electronystagmogra
From the site, here are the initial high points so you can determine if I found what you were referring to:
ENG is a series of sensory tests for your
eyes and
ears.
Do you ever get dizzy when you’re getting out of bed? Ever become nauseous when looking down from a great height? Have you felt like the world is moving even if you’re not?
It’s a common sensation, and it’s known as
vertigo.
Tony