BSL PRO Lesson H24 - Biopac
BSL PRO Lesson H24 - Biopac
BSL PRO Lesson H24 - Biopac
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<strong>BSL</strong> <strong>PRO</strong> <strong>Lesson</strong> <strong>H24</strong><br />
ECG Setup<br />
BIOPAC Systems, Inc.<br />
1. Place electrodes on the inside of the right wrist and on<br />
inside of both ankles, above ankle bone.<br />
2. Place electrode leads as shown in diagram.<br />
Red - Left ankle<br />
Black (GND) - Right ankle<br />
White - Right Wrist<br />
Running the Experiment<br />
The template is set to display CH 1 GSR, CH 3 Hand switch, and CH 40 Heart Rate. Heart rate is calculated<br />
from the ECG signal, but the CH 2 ECG signal is hidden.<br />
Recorder will press the hand switch to mark when the aberrant picture appears.<br />
Hints for minimizing data error<br />
<br />
<br />
<br />
<br />
<br />
<br />
Wait at least five minutes after attaching the GSR transducer and electrodes so the skin has ample time<br />
to absorb the gel.<br />
For best results, subject should not move and recording should not be stopped between calibration and<br />
the experiment segments.<br />
The subject must avoid excessive extraneous movement.<br />
Press the hand switch every time the clown picture appears (to be used as a time marker).<br />
Remove all jewelry or other metal objects.<br />
Check all cable connections.<br />
Signal Check<br />
1. Position subject approximately 2 feet directly in<br />
front of computer monitor.<br />
2. Click “Start” to begin recording.<br />
3. Have the subject inhale deeply.<br />
4. Review the data after 10-15 seconds, while<br />
continuing to record.<br />
• If CH 1 GSR displays a significant<br />
change, as shown at right, continue<br />
without stopping the recording. If not,<br />
check all connections and repeat.<br />
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