As of my knowledge, motion sickness or watever u call it can be
induced by being in an transport medium where by it is highly
unstable.
example one) stand by a escalator, when its moving get on it ur
body simply adapts to the motion of u ascending or descending..
however ever tried going up an escalator when it has broken
down? the very first initial step instantly creates a sense
of unfamiliarity thus inducing a short spell of
headache.
while a personal experience, traveling on a bus or taxi or even
on a boat and u feel motion sick.??
the instant cure (or i hope so) is too stare out of the window
or something really far away(instead of staring IN the bus,taxi
etcetc)
by focusing ur eyes on a further ranged object, you narrow ur
vision to the epict object.
eliminating the visual aspect of the "unstable" transport you're
on. thus u feel better.
As for the mrt train i believe that you dont feel motion sick is
because..
1) the window is pitch black(or rather the walls of the
tunnel.)~compiled with the rapid speed of the mrt train ur brain
intrepret it as a simple sheet of darkness.
2) the fluorescent lightings of the mrt trains creates
a reflection of yourself..(dont u c ur reflection when u stare at
these "black windows"?)..
thus i think thats y u dont feel motion sickness on our mrts. Do
u feel motion sick when u stare at a mirror reflection of
urself?
lols just my two cents worth of personal opinion
