Fig. 7. Monocular optokinetic stimulation to the left eye (at 15 °
s-1) while the right eye receives visual input in the form of a
stationary grating. The butterflyfish (A) shows conjugent optokinesis in both
eyes, whereas in both the pipefish (B) and the sandlance (C) the eyes are
unlinked and only the stimulated eye shows a slow phase in the stimulus
direction. However in the pipefish, the eyes are approximately correlated in
the direction in which they are moving, as seen during spontaneous eye
movements.
