FIG. 2.

(A) Active head rotations in subject #9. The first row (head impulses towards adapting side) shows the vestibular stimulus (head velocity—grey) and the inverted vestibular response (eye velocity—black) pre-adaptation (left panel) and post-adaptation (right panel) training. The active VOR gain increased by ∼21 % in this subject. The second row (head impulses towards non-adapting side) shows that the VOR increased by ∼7 %. (B) Passive head rotations in subject #9. The passive VOR gain increased by ∼17 % in this subject. In contrast to the active VOR, there was no significant VOR increase during head impulses towards the non-adapting side.