Fig. 9.

Combined roll–translational motion stimuli. Constant peak amplitude roll oscillations (θ_o = 21.8°) were paired with constant peak amplitude translational oscillations (39.8 cm; i.e., f_o = 0.4G) and variable phase. A, Mean ± SD horizontal slow phase velocity amplitude and phase from intact animals (open circles) are compared with data from two canal-plugged animals (filled circles and squares).B, Theoretical predictions of the dependence of the resultant and the translational component of acceleration along the IA axis, according to Equations 1 and 2 (solid anddotted lines, respectively).