I also found some interesting research conducted by the US Army Aeromedical Research Laboratory in 2007 which tested subjects susceptibility to motion sickness by using LCD shutter glasses closing at a rate of 4 or 8hz for 10ms while people tried to read a map in a moving helicopter. 19 out of 20 people reported less nausea…
I created another simple demo to re-create this simulation and would be interested in hearing if anyone finds it useful… http://www.feelthree.com/downloads/flash_test.rar
You can change the frequency with Z (quicker) and X. Initially it flashes about once every 19 updates… I figured that’s about 4 times a second around 75hz but I’m not sure that assumption is really correct….
The papers (including the scanned original report) are here : http://www.dtic.mil/dtic/tr/fulltext/u2/a467760.pdf http://www-ieem.ust.hk/dfaculty/so/pdf/Pages51-58-VIMS2007.pdf