Visual suppression of caloric nystagmus in cats.

A newly devised animal box with which caloric tests can be easily performed in the awake cat is presented. This device is also useful for position and optokinetic tests. Visual suppression of caloric nystagmus was investigated in such vertebrates as monkeys, cats and rabbits. There was a definite species difference in the rate of visual suppression of caloric nystagmus. It may be that the difference among species is due to a difference in fixation function among animal species.