Movie 2.

Example recording of sinusoidal vOKR experiment. Recording of sinusoidal visual stimulation using the two-camera visual stimulation setup. In the top half, both camera views (top and front) are visible. To ensure a good eye tracking performance, image parameters like contrast and brightness were adjusted. Note: The front image (right top corner) was rotated 90^° due to the camera position. Pure vertical sinusoidal eye movements (vOKR) are clearly visible in both top and front camera view. The lower half shows the corresponding eye traces of live tracking. Bright and dark blue lines correspond to vertical eye movements and bright and dark orange lines correspond to horizontal eye movements. Note: The video was sped up to allow visual inspection of different phases with different repetition rates (as can be seen by the different frequencies of the sinusoidal vOKR).