Question $3(50pts).$ Last night, the ER had a spate of emergency cases, and in the ensuing

chaos, the ECG results were not correctly marked. As the head of the hospital Bioengineering

Dept, you are asked to look through four samples and create a program that can assess whether

they belong to a patient with normal sinus rhythm$,$ ventricular flutter$/$fibrillation$,$ atrial

fibrillation, or a patient that was moving around during the measurement $($hint: causing a motion

artifact in the reading$).$

a$)$ What do you expect to see in each of the four cases mentioned above?

b$)$ Import the csv files into MATLAB and create tables with each. Evaluate for peak voltage

and heart rate. What guesses can you make?

c$)$ calculate the R$-$R interval using the findpeaks$()$ function. What guesses can you make?

d$)$ Use the function to perform a Fast Fourier Transform and evaluate the frequency

spectrum of each sample. What guesses can you make?

e$)$ Create a program that analyzes each individual sample, uses the above methods to

characterize it$,$ and prints out text indicating whether that sample is a normal sinus

rhythm$,$ atrial fibrillation, ventricular flutter$/$fibrillation$,$ or a noisy ECG with motion

artifact.