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EEG peaks do not get identified at the correct frequencies

EEG peaks do not get identified at the correct frequencies
  1. How do you extract frequency bands from EEG?
  2. How do you extract features from an EEG signal?

How do you extract frequency bands from EEG?

In general, the traditional method for extracting frequency bands from a broadband EEG signal is to use a Fourier transform. There are various scripts for this from different EEG analysis software. Most scripts will allow you to change the frequency bins based on your definition (ie delta 1-4Hz, theta 4-7Hz, etc ...)

How do you extract features from an EEG signal?

More recently, a variety of methods have been widely used to extract the features from EEG signals, among these methods are time frequency distributions (TFD), fast fourier transform (FFT), eigenvector methods (EM), wavelet transform (WT), and auto regressive method (ARM), and so on.

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