Fig. 6. Optokinetic response to split optokinesis in the naso-temporal direction
for both eyes, stimulus speed 15 ° s-1 for the left eye and 5
° s-1 for the right eye. (A) The butterflyfish shows no
response to the stimulus, apart from a potential small following movement in
the left eye (1-3 s). Instead, the eye movements are normal spontaneous ones.
(B,C) Both pipefish and sandlances show independent slow and fast phase
movements to naso-temporal stimulation. In these animals the response to the
slower drum speed (right eye) was not as strong as during temporo-nasal
stimulation.
