11-4 DELTA/DELTA XL/KAPPA VF8
11 EEG M
ONITORING
Differential vs. Referential Measurement
There are two modes of measuring EEG.
Differential mode uses two electrodes for each channel, measuring the differential
between each pair. For example, channel one has a positive (+) and a negative (-)
connection; channel two has a positive (+) and negative (-) connection; and so forth.
The displayed measurement for channel one is the differential between the 1+ and the
1- electrode.
Referential mode uses one electrode for each channel, and all four channels share the
reference (R) electrode. For example, channel one has a positive (+) connection;
channel two has a positive (+) connection; and both share the same reference
connection. Use the referential block, which fits onto the front of the EEG pod as
shown in the following illustration, to monitor EEG in referential mode.
Referential
Block
To Next Page
Loading...
