Quote:
Originally Posted by
silphium 
I myself felt queasy several times on the aforementioned E&S systems, and also in an F-16 w/ spherical display (but never, oddly enough, in real aircraft).
Cool... my company bought much of Evans & Sutherland, and I've worked with several of their newer Image Generators in various flight simulators.
The reason you feel it in a sim and not in the real world is due to mismatch between the visual and vestibular stimulae. Once the visual system is sufficienty high fidelity, the brain is 'confused' by the conflicting inputs between the visual system (telling you you're flying) and the inner ear (telling you you're sitting still on the ground). Motion based sims (which tilt on gimballed platforms) are better, but not perfect.
This is also why looking at the horizon helps with sea-sickness: it syncs the two stimulae, rather than looking at a moving platform (the boat) which causes a mis-match.
The only time I ever got 'sim-sick' was when tuning the head-tracker prediction algorithms and the viewports one the IG... sitting in the prototype for a few hours with the setting misadjusted, trying to get a software engineer to understand what I needed fixed... ugh!
Quote:
Originally Posted by
silphium 
I never considered sitting close to my HDTV might cause motion sickness, but I don't see why not. Has anyone ever experienced symptoms of motion sickness from their big screen? If so on what material?
Absolutley! the threshold for visual immersion is generally considered to be about 30deg horizontal field of view, which coincedentally is in the same ballpark as the THX maximum recommended viewing distance. Wider is better if course, but that's typically where most people start to 'feel' the visual stimulae. I've never felt sick from TV viewing, but have gotten 'butterflys' from some flying scenes if the screen's large enough.