Biofeedback – Logger Pro
Biofeedback with EKG Sensor:
1. Start the Logger Pro program and follow your teacher’s directions for how to
open the Biofeedback with EKG experiment file. Start the Logger Pro program
and open the PLTW folder. Open the Biofeedback with EKG file from the
Biofeedback folder within the PLTW folder.
2. Attach the LabQuest Mini to the computer using the USB cable.
3. Attach the surface temperature probe to Channel 1 on the LabQuest Mini.
4. Decide which member of your group will be the first test subject.
5. Remove excess oil from the skin over the bicep using soap and water or an
alcohol swab.
6. Tape the surface temperature sensor to the upper arm over the area of the
biceps. Be sure to tape the thermistor end (the tip) of the sensor directly to the
arm.
7. Attach the EKG Sensor to Channel 2 on the LabQuest Mini.
8. Attach three electrode tabs to your arms, as shown below. Place a single patch
on the inside of the right wrist, on the inside of the right upper forearm (distal to
the elbow), and on the inside of the left upper forearm (distal to elbow).
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9. Connect the EKG clips to the electrode tabs as shown in the diagram above.
Make sure to clean the with soap and water or an alcohol swab before attaching
the electrode tabs.
10. Click on the
button on the left side of the toolbar.
11. Click on the EKG icon under the CH2 icon, to the left of the LabQuest Mini icon.
12. Scroll down and click Zero to zero the EKG sensor. Close the box once the
sensor has been zeroed.
13. Wrap the respiration monitor belt snugly around the test subject’s chest. Press
the Velcro strips together at the back. Position the belt on the test subject so that
the belt’s air bladder is resting over the base of the rib cage and is in alignment
with the elbows as shown below. The tubes should hang down the front under
the rib cage.
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14. Attach the gas pressure sensor to the respiration belt. Connect the tube with the
luer-lock connector to the stem on the gas pressure sensor with a gentle turn.
Inflate the respiration belt until it is not quite comfortable but test subject can still
breathe normally.
15. Attach the gas pressure sensor to Channel 3 on the LabQuest Mini.
16. When all the sensors have been attached to the LabQuest Mini and to the test
subject, hit the collect arrow
on the toolbar.
17. Use this test run to confirm that the sensors are properly attached and to make
observations about the type of data being collected. NOTE: The test subject
should not talk when the Logger Pro program is running.
18. Note that the EKG data will appear at the top of the screen as a waveform. The
EKG data is used to calculate the heart rate. The heart rate data will be displayed
on the Heart Rate gauge on the left side of the screen. You will not be able to
use the heart rate data collected while completing a task, such as putting
together a puzzle, as the movement will affect the reading. When collecting heart
rate data, it is important to sit still in a relaxed position in a chair, with your
forearms resting on your legs or on the arms of the chair.
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19. Note that Respiration data will also appear at the top of the screen as a
waveform. Notice how the graph moves as you breathe in and out. Practice
controlling your breathing rate and see how this changes the output on the
screen.
20. Make sure the respiration belt is inflated to the point that it is not quite
comfortable but test subject can still breathe normally. Hit the Autoscale button
in the toolbar.
21. Take a few slow deep breaths and watch the changes on the screen.
22. Take a series of rapid shallow breaths and watch the changes on the screen.
23. Note that the three large display boxes on the left side will give you numerical
data for each body process being monitored. This display is updated
automatically and should be used to monitor your body’s response to stress and
relaxation. Temperature is measured in degrees Celsius, heart rate in beats per
minutes and respiration rate in breaths per minute.
24. Note that cumulative data will be displayed on the Biofeedback chart. This chart
allows you to see your progress over time and monitor the overall trends in your
body’s response. Note that different color lines are used for each reading. These
colors match the color used for each monitor in the display boxes.
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25. When you feel you are comfortable with the features of the program, click the
Stop button
.
26. Obtain a game or puzzle from your teacher.
27. Prepare for a baseline run. The test subject will complete a task while attached to
the probes.
28. Check to see if the respiration belt, EKG leads, and the temperature probe are
properly connected.
29. Click the Collect arrow
at the top of the screen. Wait until data
begins to appear on the screen. Take 30 seconds of data and note your body’s
baseline response.
30. When instructed to do so, begin putting together the puzzle or completing the
game. You will have 1 minute to complete the puzzle or game. Work quickly and
remain silent.
31. When time elapses or the game is over, watch the screen. Note how your
physiological responses have changed since you started the stress task.
32. Use whatever technique you can to slow your heart rate and your breathing rate.
Monitor your progress on the screen.
33. Monitor how you feel as you watch the reading on the screen.
o When your heart rate increases, what do you feel? Do you feel your
heart beating in your chest? Do you feel a pounding in your
temples?
o When your respiration rate increases, do you see the increased
movement of your chest cavity? Do you hear your breathing?
o Do you feel your muscles tense?
o What happens to temperature as you begin to relax?
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34. When the trial is complete, record observations about your physical response in
your laboratory journal. Provide responses to the questions in Step 38. Note
which indicator you found most helpful in monitoring your body’s response to
stress.
35. Note that at the conclusion of the experiment compiled data will appear on the
Biofeedback Chart.
36. Review your entire trial. Use the Examine button
on the toolbar to help you
pinpoint specific data for all three probes at any given point of the trial. Use the
mouse to move the line to the desired time point. The magnifying glass
zoom in on one area of the graph.
will
37. Click on the entire graph and use Control C to copy the graph.
38. Open a blank Microsoft Word file. Use Control V to paste the graph into the Word
file.
39. Print your graph and include this document in your laboratory journal. Write a
brief conclusion about how your body reacted to the stress of the task and how
well you were able to bring your body back down to baseline.
Biofeedback with Hand Grip Heart Rate Monitor:
1. Start the Logger Pro program and open the PLTW folder. Open the Biofeedback
with Hand Grip Monitors file from the Biofeedback folder within the PLTW folder.
2. Attach the LabQuest Mini to the computer using the USB cable.
3. Attach the surface temperature probe to Channel 1 on the LabQuest Mini.
4. Decide which member of your group will be the first test subject.
5. Remove excess oil from the skin over the bicep using soap and water or an
alcohol swab.
6. Tape the surface temperature sensor to the upper arm over the area of the
biceps. Be sure to tape the thermistor end (the tip) of the sensor directly to the
arm.
7. Attach the handgrip heart rate monitor to Channel 2 on the LabQuest Mini.
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8. Notice the handgrip heart rate monitor has two parts. There is a small rectangular
box with an arrow, and there are two connected cylinders. The small box is
connected to the LabQuest Mini. The two cylinders are the hand grips, and they
have clearly marked hand outlines to show proper hand placement. Both grips
must be held by the person being tested.
9. Notice the arrow on one of the hand grips and the arrow on the small black
receiver. These arrows must be aligned to use the probe. Have one partner hold
the receiver next to the hand grip with the arrows aligned when you begin
collecting data. Once data appears on the front panel, you will be able to move
the receiver up to 2 feet away and still take measurements.
10. Wrap the respiration monitor belt snugly around the test subject’s chest. Press
the Velcro strips together at the back. Position the belt on the test subject so that
the belt’s air bladder is resting over the base of the rib cage and is in alignment
with the elbows as shown below. The tubes should hang down the front under
the rib cage.
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BI – Biofeedback – Logger Pro – Page 7
11. Attach the gas pressure sensor to the respiration belt. Connect the tube with the
luer-lock connector to the stem on the gas pressure sensor with a gentle turn.
Inflate the respiration belt until it is not quite comfortable but test subject can still
breathe normally.
12. Attach the gas pressure sensor to Channel 3 on the LabQuest Mini.
13. When all the sensors have been attached to the LabQuest Mini and to the test
subject, hit the collect arrow
on the toolbar.
14. Use this test run to confirm that the sensors are properly attached and to make
observations about the type of data being collected. NOTE: The test subject
should not talk when the Logger Pro program is running.
15. Adjust your hands on the hand grip heart rate cylinders until you see heart rate
data appear at the top of the screen. It may take up to 15 seconds for Hand Grip
signals to appear. You may also need to adjust your hands multiple times before
data appears. Remember where you placed your hands to obtain this data. As
you will not be able to hold the hand grip monitor and complete a task such as
putting together a puzzle at the same time, you will have to grab the hand grip
cylinders as soon as you finish the task. The sooner heart rate data appears on
the screen, the faster you can begin trying to control this response using
biofeedback.
16. Note that Respiration data will also appear at the top of the screen as a
waveform. Notice how the graph moves as you breathe in and out. Practice
controlling your breathing rate and see how this changes the output on the
screen.
17. Make sure the respiration belt is inflated to the point that it is not quite
comfortable but test subject can still breathe normally. Hit the Autoscale button
on the toolbar.
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BI – Biofeedback – Logger Pro – Page 8
18. Take a few slow deep breaths and watch the changes on the screen.
19. Take a series of rapid shallow breaths and watch the changes on the screen.
20. Note that the three large display boxes on the left side will give you numerical
data for each body process being monitored. This display is updated
automatically and should be used to monitor your body’s response to stress and
relaxation. Temperature is measured in degrees Celsius, heart rate in beats per
minutes and respiration rate in breaths per minute.
21. Note that cumulative data will be displayed on the Biofeedback chart. This chart
allows you to see your progress over time and monitor the overall trends in your
body’s response. Note that different color lines are used for each reading. These
colors match the color used for each monitor in the display boxes.
22. When you feel you are comfortable with the features of the program, click the
Stop button
.
23. Obtain a game or puzzle from your teacher.
24. Prepare for a baseline run. The test subject will complete a task while attached to
the probes.
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BI – Biofeedback – Logger Pro – Page 9
25. Check to see if the respiration belt and the temperature probe are properly
connected. Remember, you will need to pick up the heart rate monitor as soon as
your time is up on the stress task.
26. Click the Collect arrow
at the top of the screen. Wait until data
begins to appear on the screen. Take 30 seconds of data and note your body’s
baseline response.
27. When instructed to do so, begin putting together the puzzle or completing the
game. You will have 1 minute to complete the puzzle or game. Work quickly and
remain silent.
28. When time elapses or the game is over, pick up the hand grip monitors and
watch the screen. Note how your physiological responses have changed since
you started the stress task.
29. Use whatever technique you can to slow your heart rate and your breathing rate.
Monitor your progress on the screen.
30. Monitor how you feel as you watch the reading on the screen.
o When your heart rate increases, what do you feel? Do you feel your
heart beating in your chest? Do you feel a pounding in your
temples?
o When your respiration rate increases, do you see the increased
movement of your chest cavity? Do you hear your breathing?
o Do you feel your muscles tense?
o What happens to temperature as you begin to relax?
31. When the trial is complete, record observations about your physical response in
your laboratory journal. Provide responses to the questions in Step 35. Note
which indicator you found most helpful in monitoring your body’s response to
stress.
32. Note that at the conclusion of the experiment compiled data will appear on the
Biofeedback Chart.
33. Review your entire trial. Use the Examine button
on the toolbar to help you
pinpoint specific data for all three probes at any given point of the trial. Use the
mouse to move the line to the desired time point. The magnifying glass
zoom in on one area of the graph.
will
34. Click on the entire graph and use Control C to copy the graph.
35. Open a blank Microsoft Word file. Use Control V to paste the graph into the Word
file.
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BI – Biofeedback – Logger Pro – Page 10
36. Print your graph and include this document in your laboratory journal. Write a
brief conclusion about how your body reacted to the stress of the task and how
well you were able to bring your body back down to baseline.
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BI – Biofeedback – Logger Pro – Page 11