Instruction manual

5 Analysis 53
In this function, a preset frequency band is available for each
component of the EEG: Alpha, Beta, Theta, Delta, Betalow, Beta Mid
and Beta High. For each selected band, DataTrax2 can also calculate
the average power in the band and display the value against time.
These are beneficial functions to use when teaching students, because
they can clearly see the effect that behavior has on components of the
EEG.
Activating EEG
Functions
To apply the EEG function to a channel, click on the Add Function button in the Channel bar.
Select EEG from the Function menu, then select the appropriate submenu and click OK.
Gain
Telegraph
The Gain Telegraph function is slightly
different from the other functions. Some ampli-
fiers have an additional output that sends a
calibration signal to the data recording unit.
This calibration signal relays information about
the gain settings of the external amplifier. This
information permits the recording program to
re-calibrate the amplifier output in the correct
units regardless of the gain set on the
amplifier.
Using Gain
Telegraph
Connect the analog output of the supported amplifier to any input channel. For this example,
assume this is Channel 1. Next, connect the gain telegraph output of the amplifier to any input
channel. For this example, assume this is Channel 2.
To apply the Gain Telegraph function to a channel, click on the Add Function button in the
Channel bar. Select Gain Telegraph from the Function menu. Select the manufacturer of your
amplifier, then select the amplifier you are using. Select the channel that the output from your
amplifier is connected to (Channel 1 in this case), then select the Gain Telegraph Channel
(Channel 2 in this case) and click OK.