I have an eeg signal and i am trying to plot it time vs amplitude, for some reason it is clipping and i dont know how to fix it, changing the ylim only changes the axis, please help
here is the code
close all; clear all; clc;
fs = 512
T = 1/fs;% sampling rate or frequency
load 'base' % contains eeg1 and fs
tx =[0:length(data)-1]/fs;% Make time axis for EEG signal
figure; subplot (211), plot(tx,data); xlabel('Time (s)'), ylabel('Amplitude (uV)'), title('Original EEG signal'); %EEG waveform
subplot(212), plot(tx,data);
xlabel('Time (s)'), ylabel('Amplitude (uV)'), title('Zoom into original EEG signal at 1 to 2 seconds'), xlim([1,2]) % Used to zoom in on single ECG waveformfigure;
%The mean of the PSDs of xl
mean_EEGsig = mean(data)
max_value=max(data)
mean_value=mean(data)
threshold=(max_value-mean_value)/2;
Screen Shot 2019-11-10 at 9.56.27 PM.png

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Daniel M
Daniel M 2019년 11월 11일
편집: Daniel M 2019년 11월 11일
I think your data is clipped. Actually, it looks like normal EEG data with very high amplitude electrical stimulation on top of it. Does this occur in all channels?
Nina Ciccarelli
Nina Ciccarelli 2019년 11월 11일
yes it does
Star Strider
Star Strider 2019년 11월 11일
Unfortunately, you ‘railed’ the amplifier. You cannot recover the lost data.

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도움말 센터File Exchange에서 EEG/MEG/ECoG에 대해 자세히 알아보기

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2019년 11월 11일

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