This test is used for the separate asses-sment of reflexive saccades (prosacca-des) and voluntary saccades (antisacca-des). The direction of the horizontal gaze target is random, with an amplitude of either ☑0° or ☒0°. The amplitudes of the jumps vary between ±5° and ☑0°, the velocities between 15°/s and 25°/s.Īdvanced Saccades allow a detailed assessment of almost every part of the brain and so allow a kind of „brain mapping” with a sensitivity that can, in certain cases, be higher than that of an MRI.Ī fixation target at the zero position is switched off, after which a new target appears randomly with an amplitude of either ☑0° or ☒0° in the horizontal direction.ĭuring the presentation of the horizontal gaze target, the fixation target at zero position remains for a short time. To assess the onset of Smooth Pursuit, unpredictable step ramp stimuli with various jumps and speeds are used. Variant of the Smooth Pursuit test in which the initial saccade is suppressed by a short jump of the fixation target. The vertical, sinusoidal stimuli have an amplitude of ☑0° and are presented in each test run at four velocities, 0.1Hz, 0.3Hz, 0.5Hz and 0.7Hz. The viewer’s anticipation directs the eye in the expected direction and then back again to the gaze target (zero position). After each frequency there is a short pause and the gaze target briefly remains in the zero position. The patient’s eyes pursue a vertical, sinusoidal gaze target, which is contin-uously presented in a sequence of four frequencies. The duration of the measurement, the step duration and step amplitude horizontal and vertical can be set by the user. This test is performed to detect gaze dependent nystagmus. Speed, precision and latency are assessed, along with the number of trials, error saccades, valid saccades and express saccades. They alternate directions and are equal in number. The test allows the assessment of the saccade system via horizontal and vertical stimuli with an amplitude of between ±5° and ☓0°. The horizontal and vertical stimuli have a fixed amplitude of ☑5° and ☑0°, respectively. It enables an examination of the pursuit system with horizontal and vertical stimuli at four velocities. This test allows an examination of the optokinetic system using various stimuli in the horizontal and vertical planes.ĭisorders of the pursuit system can be detected with this test. This feature allows users to freely con-figure their own VNG tests to be used separately or together with other tests as part of a test protocol.ĭizziness caused by a malfunctioning of the optokinetic system is indicative of a central nervous system disorder. The numeric values of Slow Phase Velocity (SPV), Vestibular paresis, Directional Preponderance and the Fixation Index are calculated and shown in a table. In addition to the analysis of spontaneous nystagmus, the results of the irrigations are displayed in the familiar culmination and Freyss diagrams, thus allowing diag-noses at a glance. It can be used for dynamic posi-tional testing of the semicircular canals and to document repositioning treatment of patients suffering from BPPV. This test is designed for the diagnosis of BPPV. This test is designed to document posi-tion-dependent nystagmus, which fre-quently presents in patients suffering from atypical BPPV or central nervous system disorders. This test is performed to document gaze dependent spontaneous nystagmus, au-tomatically calculating its direction and severity. This test is used to calibrate the distance between the patient‘s eye and the beam splitter mirror of the video goggles. This interface is used to exchange patient master files, videos and raw data from measurements with the VertiMobile® app as well as completed questionnaires with the VertiQuest® app. VertiPACS® controls all ZEHNIT hardware devices, including VertiGoggles®, VertiPlatform®, VertiChair® and VertiSVV®. Every test can be edited and played back with the corresponding video material. Some test results require a closer look and sometimes even some editing to smooth out artefacts and make the result more clear-cut. Your own logo can be integrated to enhance your corporate identity. Reports and summaries can be created as printouts or PDF files. The latest GDT version (3.1) is supported. Patient master data and examination results can be transmitted with this protocol. VertiPACS® allows the same patient file to be accessed from different locations. The easy-to-use database makes creating and retrieving patient files child‘s play.Įxaminations and assessments do not necessarily happen in the same room. It offers a complete arsenal of tests and procedures as well as a rich set of editing and documentation tools. ![]() VertiPACS® is the integrated software platform for all the entire ZEHNIT vestibular product range.
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