ENG vs. VNG Technology


Discover how infrared video offers increased sensitivity over the use of traditional electrodes.

By testing eye movements using electronystagmography (ENG) and videonystymography (VNG) simultaneously, trained vestibular technicians were able to reach several conclusions about the benefits of VNG technology versus traditional ENG.

First, nystagmus was recorded more often by the infrared video technology of VNG compared to monitoring with electrodes. Additionally, nystagmus slow phase velocity was higher using infrared video nystagmography. These benefits of an improved, more sensitive test for dizziness and vertigo prove that VNG technology is more accurate and reliable than ENG technology in spontaneous, positional and positioning tests.



 How else does infrared video outperform traditional testing with electrodes? Using a camera on one or both eyes, VNG equipment follows the pupil of the eye to track vertical and horizontal movements. Clinicians are able to eliminate visual fixation points and test the patient in complete darkness because of VNG’s infrared technology, too. Most importantly, VNG technology captures all eye movements on video, providing clinicians with an unprecedented view during testing.

By improving upon standard ENG tests with advanced infrared video technology, MedTrak’s fast, user-friendly balance testing software improves the accuracy of patient diagnoses. MedTrak’s Complete VNG Testing System helps identify the core concern of imbalance issues, allowing specialists to provide patients with customized care. And when combined with caloric testing, VNG is the new gold standard in vestibular testing.