SECTION 7 APPENDIX I: MENUS, PROCESSED VARIABLES AND GLOSSARY
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7-4
Menu Item Options Default Value
Demo Case ON / OFF OFF
Diagnostics
Diagnostic Codes
DSC Self Test
Monitor Error Log
Clear Trend Data
ON / OFF
OFF
*These values are for Monitor Mode I. For other modes, consult Figure 22, “Monitor
Mode Settings.
7.3 Processed EEG Variables
Variable Name Description Range
Bispectral Index
(BIS)
The output from a multivariate discriminate
analysis that quantifies the overall bispectral
properties (frequency, power, and phase)
throughout the entire frequency range.
0 – 100
Signal Quality
Indicator (SQI)
A measure of the signal quality for the EEG
channel source(s) that is calculated based on
impedance data, artifact, and other variables.
Not affected by Suppression Ratio.
0 – 100
20 points per bar
EMG The absolute power in the 70-110 Hz range. The
power value is reported in dB with respect to
0.0001µV
2
. All the artifact detection is turned
off for this variable.
30 – 80 dB Trend
30 – 55 dB Bar
Graph
Suppression Ratio
(SR)
The percentage of epochs in the past 63 seconds
in which the EEG signal is considered
suppressed.
0 – 100 %
Burst Count The number of EEG bursts per minute, where a
“burst” is defined as a short period of EEG
activity preceded and followed by periods of
inactivity (suppression).
0 – 20
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