Eclipse Additional Information Page 53
3.7.2.6 Special Waveform Markers
In the edit screen, you have additional labels to use for marking points of interest on the waveforms. In con-
trast to the normal Waveform Markers, these marks may be applied to many waveforms all of the same in-
tensity, as their ms and µV values are not used for the latency/intensity graph. For example, these markers
may be helpful when performing a rate study so that the latencies for a specific wave may be compared at
two different rates for the same intensity.
The Clear Response (CR) user label is intended to indicate that a waveform contains a genuine response.
Local or national criteria may have been defined for this. For example a Signal to Noise ratio above 3:1.
The Response Absent (RA) user label is intended to indicate that a waveform not only contains no obvious
response but also meets local or national criteria for residual noise, thus allowing the tester to be confident
that there is genuinely no response present and therefore that stimulus level is below the hearing threshold.
The Inconclusive (INC) user label is intended to indicate that a waveform is inconclusive (qualifies as neither
CR nor RA). This third option is frequently overlooked but is essential for accurate hearing threshold estima-
tion tests. In general this label will be used to denote waveforms that are of insufficiently good quality to be
allowed to help define the hearing threshold.
Enable Multiple Waveforms Markers if needed, when enabled it is no longer possible to compare curves to
each other and this way calculate inter-latency data.
3.7.2.7 Display Options
Invert Curves on Screen When enabled all curves will be displayed inverted. This is indicated at the vertical
axis with negative values.
Invert ECochG on Screen allows you to invert only the ECochG curves displayed with the wave peaks go-
ing downwards.
Auto Single Curve Display Gain will automatically apply additional display gain if the displayed waveform
only has very small excursions. This may allow for an easier identification of peaks.
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