Fig. 4

Segments of the experimental nystagmus time series used for model fitting. From top to bottom, the nystagmus waveform types are: asymmetric pseudo-cycloid (a); jerk with extended foveation (b); jerk (c); and asymmetric pseudo-cycloid (d). The extracted UPOs used for evaluating fitness are shown in red. On each plot, the vertical axis represents the horizontal gaze angle in degrees (°), with positive values denoting rightward eye positions. Time is in seconds (s). In the bottom plot (d), the vertical lines correspond to blinks