Eclipse Additional Information Page 112
EMG Controlled Stimulus/Recording
Set the EMG contraction target amplitude range.
EMG Controlled Stimulus/Recording ensures that the recording of the VEMP response will only take place
when the patient has contracted their muscles within the target range. These values can be adjusted by slid-
ing the vertical black bars with the mouse.
If the EMG controlled stimulus is set to ”off”, then the averaging will be continuous until all the sweeps have
been collected or until the user stops the test.
Note When the EMG controlled stimulus/Recording option is enabled and the EMG is outside the selected
target range, not only does averaging pause, but the stimulus is also interrupted to alert the patient.
Note The EMG controlled stimulus/recording option is by default de-selected in the oVEMP protocols due to
a much smaller contraction.
Patient´s EMG Monitor
There are two patient EMG monitor options; one visual and one acoustic. The EMG contraction monitor (for
the operator) will always appear on the test screen, no matter which patient EMG monitor is selected.
Acoustic EMG Monitor
This method provides a sound cue to the patient being tested. The patient will hear a 250Hz tone being pre-
sented to the non-test ear. When their contracted value is within the target EMG range selected by the oper-
ator, the tone in the non-test ear will stop and the test tone will begin in the test ear.
To enable the patient monitor tone, click on the Monitor Tone menu and select the intensity level at which to
present the 250Hz tone.
Visual EMG Monitor for cVEMP
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