Extracting EEG Components from Signal

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Ricardo
Ricardo on 6 May 2011
Commented: THEJASWINI M S on 4 Mar 2022
I have a simple EEG signal in MATLAB such as that shown in the figure below. And what I wanted was to extract the components of the EEG according to the following table.
  • Delta - up to 4 Hz;
  • Theta - 4 -> 8 Hz
  • Alpha - 8 -> 13 Hz
  • Beta - 13 -> 30 Hz
  • Gamma - 30 -> 100 Hz
Any suggestions how I can solve the problem?
  1 Comment
prabakaran munusamy
prabakaran munusamy on 30 Mar 2012
Hi, do you have any idea about this ..because i also doin this project...could you help me

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Answers (2)

Walter Roberson
Walter Roberson on 6 May 2011
This is not easy to do properly, I gather.
I suggest you see http://www.mathworks.com/matlabcentral/answers/?term=eeg
ying xing FENG
ying xing FENG on 5 Mar 2012
Hi,
I'm working on similar project as well. The way i do is restructure the binary data from hardware(RS232 Serial Port) , plot the value in time domain. Then, you may use FFT function to transform the signal into frequency domain. With that, just extract or segment the signal with respect to frequency.
Hope to hear from you and learn more ;)
  2 Comments
Lisa Suette
Lisa Suette on 25 Jun 2021
How did you restructure the binary data?
THEJASWINI M S
THEJASWINI M S on 4 Mar 2022
hello everyone ,i facing the problem of how to extract frequency bands from EEG signals
I have convert time domain EEG signals into frequency domin now i need extract alpha beta gamma and theta bands .
please anyone can help me...

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