I want to find the correlation coefficients between two signals and to plot the deference in values using matlab. I have two eeg.edf datasets with 20 electrodes each, of healthy and depressed subjects. I have to find the correlation coefficient between electrode Fp1 healthy and Fp1 depressed, F3 healthy and F3 depressed and so on..

Can anyone help me with the code? so far I used edfread to transform my datasets in timetable variables.

Thank you!