Signal Processing Stack Exchange is a question and answer site for practitioners of the art and science of signal, image and video processing. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I can't understand how to use normalization technique for EEG.

  • Is it used for results of FFT or for raw EEG signal?
  • Are there different methods with common name "$z$-transform"?
  • And what z-score used in this article?
share|improve this question
up vote 0 down vote accepted

Need a bit of clarity in question. There can be numerous normalization techniques for EEG depending on how they are used. That can be before processing (i.e. raw) or even after processing (for example, with FFT or other transforms).

Z-transform is ONE method. Period. There is nothing else called z-transform. You can have a look on Wikipedia entry of z-transform here.

Z-score, as used in your article, is a statistical measure, also called the standard score. More info here, again.

To sum up, z-transform and z-score are NOT linked.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.