[Comparison of nystagmus responses after thermic stimulation (author's transl)]

A model of the vestibulo-oculomotor system allows theoretical considerations concerning unsymmetrical nystagmus responses. For thermic stimulation unsymmetrics are estimated by means of a commonly used formula for relative differences of reactions. It is shown that the relation between these unsymmetrics and the real change of nystagmus intensity is nonlinear and also different for abnormal decrease and increase of intensity, respectively. Possible misinterpretations are avoided, e.g., by analysis of absolute parameters of nystagmus.