Vestibular Analysis

Our VN415 module is designed for convenient computer aided analysis of positional and caloric testing, featuring rapid data transfer technology enabling high quality video and precise measurements, with all results stored in our OtoAccessTM database.

Connect and GO!

VN415 is a completely portable VNG system with no bulky equipment to get in the way. Start the software, place the goggles on the patient and you are ready to test.

High Quality Video

Performs real time analysis with rapid data transfer (105Hz binocular, 174Hz monocular) which allows for much more data to be analysed, giving very precise measurements.

Oculomotor Analysis

Our VO425 software module is designed for clinics that carry out detailed balance evaluations, containing all the features of the VN415 plus computer aided analysis of oculomotor tests.

Ocular Stimuli

Full field of view visual stimuli are software generated from your laptop or PC connected to a video projector or an LCD screen. The digital stimuli are ideal for both pediatric and adult populations and include a choice of several default and imported patterns.

Automatic or Manual

The system produces highly accurate test results, but you can switch to manual edit mode in all tests to overrule the automatic analysis. In manual edit mode you can add or delete nystagmus marks, change slopes and define alternative areas of analysis.

Test Battery

Our VNG comes in two versions, each with increasing scope.

Both the VN415 and VO425 can be delivered in monocular or binocular camera configurations.

FireWire and the FireWire symbol are trademarks of Apple Computer, Inc., registered in the U.S. and other countries. The FireWire logo is a trademark of Apple Computer, Inc.

  • Spontaneous Nystagmus
  • Bithermal Caloric
  • Positional
  • Dix-Hallpike
  • Gaze (only VP425)
  • Saccade (only VP425
  • Smooth Pursuit (only VP425
  • Optokinetic testing (only VP425

Light bar

Available worldwide, the Interacoustics Digital Light Bar (DLB) is being offered as an option for your VNG system. The DLB can be a portable alternative to the video projector or flat panel LCD screen, for generating the stimuli for oculomotor testing.


A DLB tripod allows portability, and enables both vertical and horizontal stimulus display. The DLB’s height above the floor must be at the same level as the patient’s eyes, which is done by adjusting the height of the tripod to match the patient’s eye level.
  • Portable, easy set up with incl. tripod
  • Automatic detection by the software
  • Simple calibration
  • 20 degree gaze targets
  • Oculomotor testing in horizontal or vertical
  • Built-in diode diagnostic test
  • Folds up for easy storage or transport
  • Digital Light Bar provides ±20° viewing angle
  • Max./Min. tripod height: 155 cm / 80 cm
  • Tripod weight: 2,2 kg
  • DLB weight: 2,1 kg
  • DLB Dimensions (L x H x D): 84 x 8,3 x 9,8 cm
  • USB cable length: 7,6 m


Official Interacoustics support and downloads.
Some products and features may not be available for all countries or all areas. Contact a local distributor or Interacoustics directly for more information.