Have you ever been on an airliner when it had to abort a landing in the fog. After the thrust upward, it feels like the plane is standing still even when it is making a couple 360 and reapproach. When he was heading to the ground, banking left, the G-Forces didn't even change. I'm assuming everyone felt (vestibular canal) the plane was leveled off.
Heli's are different than a large plane, but they are worse for g forces. You can change speed/direction in them faster.
We used to hunt hogs at my friends ranch from a small heli. This thing was like a Ferrari Helicopter, it was insane how fast and maneuverable it was.
Almost lost my lunch a few times when it changed directions. Like being on a steep roller coaster constantly.
I've lost my bearings driving a boat at high speeds before, i can see it being a big factor for a heli.