EEG pre-processing steps

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atie
atie 2012-6-22
评论： Rasa 2019-4-17
Hi, I just want to the exact step in pre-processing EEG signal.
Step 1: convert time-based data into frequency-based data
Step 2: filter the signal to make sure only the wanted frequency is available (eg: 0.5 Hz - 50 HZ)
Step 3: remove any artifacts
Step 4: Divide the clean signal into 4 bands (alpha, beta, theta, delta)
Is these steps correct?

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回答（2 个）

Matt Gaidica
Matt Gaidica 2019-3-8
What is the goal of your overall analysis? I think the Chronux Toolbox might help you, although, if you just want to get a Fourier analysis, it only takes a few lines of code.
In general, I would modify your protocol:
  1. Detect and remove artifacts in raw data.
  2. Filter raw data based on frequency range of interest (address 50/60 Hz line noise if necessary)
  3. Perform time-frequency analysis.
Provide more information about what you want to do.
Kosai
Kosai 2012-6-28
the Steps are correct but additional to the 4th one : GAMMA-Band must be extracted also ....
  2 个评论
Sepa Abdelrazek
Sepa Abdelrazek 2018-7-15
can you please tell me how to perform the steps by codes on a data set
Rasa
Rasa 2019-4-17
@Sepa Abdelrazek, Do you have the code to perform the steps ?

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