There is a difference with what is normal medically, and what the public considers normal. I think you experienced first hand what medically normal is after your test. Things like being able to eat, speak, move the limbs and body parts, not reverting to a child or some extreme neurological problem. That is what they're concerned about. A pianist having difficulty playing the piano immediately is not their concern. If she can move her fingers and arms, and has no problem in the brain, then it she can play again eventually if she works on it.
Public normal is what most people have, or consider a basic necessity. A roof over their heads and food to eat everyday. What is subjective though are the non necessity things like going on vacation or having expensive things. That is why we have terms as poor, middle class, and rich.