Extracting EEG Components from Signal

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?

[prabakaran munusamy]

Hi, do you have any idea about this ..because i also doin this project...could you help me

Answer 1

[Walter Roberson]

This is not easy to do properly, I gather.

I suggest you see http://www.mathworks.com/matlabcentral/answers/?term=eeg

Answer 2

[ying xing FENG]

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 ;)

[Lisa Suette]

How did you restructure the binary data?

[THEJASWINI M S]

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...