How to cut EEG signal?

Question

MEGAT FARIZUL AUZAN ZUHAIRI 2014-5-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/128029-how-to-cut-eeg-signal

编辑： Daisy Das 2023-3-29

My EEG recording is 300sec.. how to extract from 180sec to 240sec ?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Azzi Abdelmalek 2014-5-2

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/128029-how-to-cut-eeg-signal#answer_135423

在 MATLAB Online 中打开

If s is your signal

n=numel(s);
n1=fix(180*n/300);  
n2=fix(240*n/300);
out=s(n1:n2)

2 个评论
显示无隐藏无

Vaishali Harsulkar 2018-2-2

Thank you for this solution. It is working.

Nikki Larsen 2020-4-20

编辑：Nikki Larsen 2020-4-20

what do i do if I have floating numbers for time for example instead of 180s what if i have 0.45673s but my total time is 300s? I tried the code above but it did not work,the 'out' was empty.

Your help would be very much appreciated.

请先登录，再进行评论。

Answer 2

Daisy Das 2023-3-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/128029-how-to-cut-eeg-signal#answer_1203499

编辑：Daisy Das 2023-3-29

在 MATLAB Online 中打开

data = importdata("filename.mat");    %enter the filename manually
Error using importdata
Unable to open file.
fs = 256;     % sampling frequency of the signal (enter manually)
start = 180;
endd = 240;
out_row = data(:, start*fs:endd*fs);    % if each row represents one channel
out_col = data(start*fs:endd*fs, :);    % if each column represents one channel