neurovestibular

We do not have much experience with neurovestibular effects on flying the shuttle for mission lengths greater than 16 days.

Space Diary: 16 Days in Space and ??? To Get Home 2008

When you first come back - and this is true whether it's a short flight or a long-duration flight - your neurovestibular system is set to a different level than it is here.

Post-Flight Press Conference Upon Returning From The Russian Space Station Mir 1997