Binocular and monocular optokinetic nystagmus in cats to textured visual patterns

Binocular and monocular optokinetic nystagmus (OKN) to the motion of textured visual patterns have been studied in alert cats. In the temporonasal monocular stimulation at a velocity above 10 deg/sec and in the nasotemporal monocular stimulation, the motion of random noise or a checkerboard elicited larger slow phase eye velocities than the motion of stripes with regularly or randomly arranged vertical bars. To temporonasal stimulation at a velocity below 10 deg/sec, there were no differences in slow phase eye velocities according to the types of the textures. Binocular OKN showed similar texture preferences as temporonasal monocular OKN.