Fig. 3: The rotation axis is placed next to the subject, meaning that both otoliths will be simultaneously stimulated by GIA.

A When the subject was moving according to the counterclockwise (CCW) direction, a virtual tilt of 45° was experienced to the right (right-ear-out, REO). B When the subject was moving according to the clockwise (CW) direction, a virtual tilt of 45° was experienced to the left (left-ear-out, LEO)6,46 (From Moore, 200146 with permission; reproduced from Experimental Brain Research).