crab@, may I surmise that you don't have a lot of time in the 205/212 series?
Correct John but I suppose it is something you just get used to - like the flying position in the Wessesx and other great ergonomic design features of 20th century helicopters
Flicker vertigo/flicker epilepsy is also well documented on some French roads where the spacing of the trees causes the low sun to flash at exactly the right frequency if you are driving around the speed limit.
ISTR it was one of the things covered in initial aircrew medicals for the British Military - they wired you up to an EEG and then flashed strobes at you to see if it triggered a fit.