Default Collection Parameters; Procedure; Edit Cvemp Results - Interacoustics Eclipse EP15 Instructions For Use Manual

4.6.3 Default collection parameters

The standard cVEMP protocol, settings for the stimulus and recordings are:
Stimulus parameters
Type: 500Hz ToneBurst, Blackman (2:2:2)
Rate: 5.1/s
Intensity: AC: Typically ≥ 95 dBnHL is used, but is not preselected, and must be set by the user prior to
staring the test.
Recording parameters
Low pass filter: 1000Hz
High pass filter: 10Hz 6/oct
Electrode impedance less than 5kohms, with interelectrode impedance less than 3kOhm.
Recording epoch 100ms with a 10ms prestimulus recording period and a 90ms post stimulus recording
period.
Approximately 150 sweeps per waveform shall be collected.
EMG controlled stimulus (cVEMP only), 50µV RMS to 150µV RMS, subject to aim for 100µV.

4.6.4 Procedure

1. Confirm low impedances (below 5kOhm).
2. Choose the intensity and select the ear to run the test.
3. VEMP response amplitudes rely heavily on the contraction of the Left and Right SCM muscles.
Instruct the patent to turn their head to the right or left to activate the muscle on the test side. The
patient monitor can be used to guide the patient during testing to obtain clearer test results.

4.6.5 Edit cVEMP results

Use the Edit sheet to mark the peaks. To select the VEMP partner, double click the waveform handle, then
right click the waveform handle of the opposite ear and select Set VEMP Partner. These will be used in the
calculation of the Asymmetry Ratio calculation.
D-0120588-B – 2019/03
Eclipse – Instructions for Use - EN
Page 63