Perception gains during fore-aft oscillations at 0.15, 0.3, and 0.6 Hz before and after spaceflight.
A. The reported magnitude of fore-aft self-displacement was divided by the actual magnitude of sled translation along the track (translation was actually ±195, ±49, and ±12 cm at 0.15, 0.3, and 0.16 Hz, respectively). B. The reported angle of tilt in pitch was divided by the maximum tilt of the chair (tilt varied between ±10° at each frequency). Dashed lines correspond to a gain of unity. Mean ± SE of 10 subjects. *p<0.05 relative to the last pre-flight session.