EEG signal plot varies if all channel data is plotted separately...

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Saima Raza
Saima Raza 2023-1-19
I have plot my EEG data with the code given below:
x=load('02SegmentedData.mat');
LC=length(x)
fs=125
TC=[0:LC-1]/fs
%Plotting
figure;subplot (211),plot(TC,x)
xlabel('Time (s)'), ylabel('Amplitude (uV)'), title('Complete EEG data')
hold on;
I got the plot with the code given ablove but it is different from the plot which i got after plotting each channel data seperatley with the code given below:
for k=1:16
subplot(4,4,k),plot(TC,x(:,k))
xlabel('Time (s)'), ylabel('Amplitude (uV)'), title(sprintf('EEG signal of %d channel',k))
hold on;
end
Any help will be highly appreciated.Why i am getting diffenerent amplitude value in these two graph

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