Which goggle do I choose for vestibular testing?

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Do you also sometimes have difficulties finding your way through the jungle of goggle options for vestibular testing? This article gives you some hint...

New Micromedical Orion Rotary Chair for enhanced vestibular assessment

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Interacoustics is excited about the release of a new reclining, rotary chair to evaluate bilateral peripheral vestibular weaknesses identified in calo...

All the experts are going to the XXX Bárány Society Meeting in June! Are you?

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Are you going to Uppsala, Sweden in June? We are exited to be going to the big balance conference, XXX Bárány Society Meeting in June in Uppsala,...

5 tips to improve test results with Eclipse

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This tip gives you some practical hints on preparations that can help you optimize test results when using the Eclipse for ABR, ABRIS and ASSR testing.

Low noise is essential for clear results in any evoked potentials recording.
Both the physical location as well as the state of the patient can influence the noise level.


1. Make sure that your test room is suitable for testing

If you follow the below recommendations, you are well ahead of making sure that your room is suitable for testing:

  • Use a magnetically shielded and soundproof - or at least very quiet room or booth
  • Use a dedicated ground only for the Eclipse
  • Separate any equipment cables, e.g. separate electrode cables from transducer cables
  • Turn off or disconnect lights and other equipment that you are not using


If there is too much ambient or electrical noise in a room, in some cases, you can improve the set-up by moving to another test location.

Alternatively, moving the patient bed within the existing room can also improve the noise level as cables and electrical sources generating noise may be hidden in the wall.


2. Make sure that your patient is in the right state

Your patient should:

  • Be relaxed and calm
  • Have his eyes closed and face and jaw muscles relaxed
  • Be lying or reclining comfortably in a bed or chair

So turn the lights of, and let your patient fall asleep. It will help improve the test results.


3. Prepare your patient correctly

Correct skin preparation and mounting of electrodes is important for optimizing electrode contact to the skin and thus reducing the electrode impedance.

We recommend that you use an abrasive preparation gel to clean the skin, e.g. NuPrep.
You should carefully attach the electrodes tightly to the skin by touching the outer edge of the electrodes.

For more details on how to prepare your patient and mount electrodes, we recommend that you read our tips on mounting electrodes.


4. Check the electrode impedance

When you have mounted the electrodes and electrode cables have been attached, we recommend that you check the electrode impedance by using the indications on the Eclipse preamplifier.
Under normal circumstances, the aim should be an impedance level of 3 kOhm or below.


5. Adjust the rejection level

With the Eclipse, you can adjust the rejection level according to electrical interference in the room as well as the state of the patient. The higher the rejection level value, the more noise is recorded during each average. That's why, the lowest possible rejection value (without rejection) is preferred.
Typically, when doing ABR with the Interacoustics Eclipse and under the above described conditions, you can make recordings using a rejection level of 40µV.


How to use EyeSeeCam vHIT to perform suppression head impulse (SHIMP) test

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SHIMP is the latest test protocol for vHIT (suppression head impuse test). The SHIMP test allows you to determine the extent of vestibular function. E...

Why perform visible speech mapping?

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Visible speech mapping (VSPM) is a method of showing the benefit of a patient's hearing aid objectively. Using visible speech mapping, you can show yo...

Interacoustics enters distribution agreement with Bertec

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New Viot Video Otoscope for high-quality images and video

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NEW! Sera DPOAE module

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Balance testing in complete darkness! New Virtual SVV solution from Interacoustics

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