Visual orientation in 0- ISS Experiments( C Oman, A Berthoz, et al Subjects indicate the subjective floor of the room 16. 423 SBE(Neurovestibular Countermeasures)16.423 SBE (Neurovestibular Countermeasures) Visual Orientation in 0-G ISS Experiments (C. Oman, A Berthoz, et al.) Subjects indicate the subjective floor of the room