[The Romberg head-shake test within the scope of equilibrium diagnosis].

We review the standard functional tests of static and dynamic equilibrium and discuss the value of these tests. The pendular platform test and the tilting table test were developed for provocation of the balance system, but are not used in clinical investigation because of the complicated apparatus and the difficulties of judgement of the curves recorded. A simple modification for provocation of the balance system, available in the clinic, the consulting room or the doctor's office is recommended, consisting of horizontal head-shaking in the Romberg position during posturographic recording. In healthy subjects little increase of body sway is found, but in patients with peripheral or central vestibular disorders a distinct tendency of disequilibrium is seen.