[The cumulogram for the sinusoidal rotatory test (author's transl)].

The cumulogram (graphic representation of the cumulative eye position) seems to be a reliable method for studying intensity, symmetry, and regularity of nystagmic responses. Applying sinusoidal rotatory stimulation, the vestibular output can be described in terms of gain and phase difference. The numerical evaluation of cumulograms is demonstrated for sinusoidal tests. The dependence of age is determined for gain and phase difference. While the phase difference appears to be practically independent, the gain of the vestibulo-oculomotor system is strongly correlated with age.