Using fft on ecg data?

I have ecg data that is made up of two columns, milliseconds since session start and Compound ECG (in mV). I want to use the fft function on the data so that I can further analyze it.I wish I could be more specfic but I'm fairly new to using matlab so I'm not quite sure what I'm doing wrong. The data is stored in csv format. How do I correctly pass the data I need into the function to use?

Here's an example of what the data looks like:

• Millisec | ECG mV
• 2457 | -0.09
• 2461 | -0.085
• 2465 | -0.085
• 2469 | -0.09
• 2473 | -0.095
• 2477 | -0.1
• 2481 | -0.11
• 2485 | -0.115
• 2489 | -0.115
• 2493 | -0.12
• 2497 | -0.12
• 2501 | -0.12
• 2505 | -0.125
• 2509 | -0.13

Answer 1

[Azzi Abdelmalek]

Use csvread http://www.mathworks.com/help/matlab/ref/csvread.html or xlsread http://www.mathworks.com/help/matlab/ref/xlsread.html to import your data, then use fft function http://www.mathworks.com/help/matlab/ref/fft.html