Table 1 Gaze tasks performed on each of the six visits. On trials 3 to 8, the order of tasks D, E, F, G, H, and I are randomized on each visit.

0

A) Initial reading

1

B) 10 deg head saccades to the right – calibration of head sensor

2

C) Control task – no head or eye movements

3

D) Head center, Eye saccades to ± 10 deg

4

E) Head left 50 deg, Eye saccades to ± 10 deg

5

F) Head right 50 deg, Eye saccades to ± 10 deg

6

G) Gaze stabilization during sinusoidal head movement at 0.25 Hz (VOR)

7

H) Gaze saccades to ± 40 and ± 50 deg from midline

8

I) Smooth pursuit to left between 10 – 60 deg, followed by smooth pursuit to right between 10 – 60 deg