Step 12. Experiment!
- Think of a way to make the heart rate of the participant go lower. How low do you think the rate can go? Test your hypothesis if the participant is still willing and record the results.
Lowest heart rate observed? ________
What did you do to make it go so low? ________ - Think of a way to make the heart rate of the participant go higher. How high do you think the rate can go? If the participant is still willing, test your hypothesis and record the results.
Highest heart rate observed? ________
What did you do to make it go so high? ________ - ¡Turn off! all equipment. Return everything to the order you founding it in, if not a little better
Check in
- The filter you built actually snuck a little extra gain into our system. The filter amplifies by an amount H = R2/R1, thereby making the Overall Gain
Overall Gain = G x H = ( ) x ( ) = __________
- If the signal you are measuring has been amplified by the Overall Gain, what is the size of the original signal? [Hint: The measured signal is the original signal multiplied by the Overall Gain.]
GO BEYOND
Next steps. Share what you learn, learn how to share
- Write down one or two things you learned today.2
- Is it important to ask someone’s permission before measuring their heart beats?
- Can you think of other biomedical data whose integrity, security, and privacy we want to guarantee?
- How could we secure such guarantees?
- What can we do to make healthcare better?