18 Monitoring EEG
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Changing EEG Settings
Be aware that any changes made to EEG settings apply to both EEG channels.
Switching EEG Numerics On and Off
Each EEG numeric can be individually switched on or off in the Setup EEG menu.
1 In the Setup EEG menu, select the numeric label.
2 Select On or Off to switch between the settings.
Changing the Scale of the EEG Waves for Display
This only changes the visual appearance of the wave. It does not affect the signal analyzed by the
monitor or printed in reports or recordings.
1 In the Setup EEG menu, select Wave Scale to call up a list of wave scales.
2 Select the required scale from this list.
Scaling information is displayed with each EEG wave.
•If
Show Gridlines is set to On in Configuration Mode, gridlines and the current wave scale values
are shown with the EEG wave.
•If
Show Gridlines is set to Off in Configuration Mode, the current wave scale is indicated by a size
bar beside the EEG wave.
Changing Filter Frequencies
The low and high pass filters screen out undesirable interference from the raw EEG wave display. The
current EEG filter frequency settings are shown in the header of the CSA. Changing filter settings
affects the EEG wave and all the EEG numerics. Whenever the filter setting is changed, a filter change
marker appears next to the spectral lines.
To change the filter settings:
1 In the Setup EEG menu, select Low Filter or High Filter to call up a list of available frequencies.
2 Select the required frequency from this list.
Changing the Speed of the EEG Wave
The EEG measurement has its own speed control and is not affected by the wave speed settings of the
other measurements.
In the
Setup EEG menu, select EEG Speed. Choose the required speed from the pop-up list. This
defines the speed at which the wave is drawn across the screen in millimeters per second (mm/s).
On/Off SEF
On/Off MDF
On/Off PPF
Switch the trendline of the specific numeric on or off.
Setup CSA Window This menu entry lets you
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