In article ,
Martin wrote:
On Fri, 24 May 2013 17:12:01 +0100, Tom Gardner
wrote:

If you can find an astronaut with no vestibular (semi-circular
canal) function, I will be a little surprised.

I'd have thought that was a distinct advantage for an astronaut.
I suspect when the fluids float around in the labyrinths they
generate all sorts of spurious signals that cause nausea.
No signals = no nausea.

If you can find somebody with no vestibular (semi-circular
canal) function, who can walk about without falling over using only
his sense of touch I will be a little surprised.

Then prepare to be surprised. I am just one such - but, then, I
am lucky because I have had a lifetime to adapt.

I can even ride a bicycle and ski, but I need a very stable one
of the former, and it took me 150 hours to learn the latter where
people with normal abilities take 30.


Regards,
Nick Maclaren.