How can I design a filter for EEG?

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Holden - 2021-02-02T10:27:16+00:00
Question: How can I design a filter for EEG?

I have matrix which is included the channels (row=19) and trial (columns=330) . Now, I have to design a FIR filter to extract data in different bands( beta, alpha, theta,...). I've used fdatool and now I'm confused how I can give my data to the filter to get the output! Could anyone help me?

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    • Expert Answer

    Profile picture of Neeta Dsouza Neeta Dsouza answered . 2025-11-20

    Without seeing your code that designs your filters, and your data (or a sample of it), it is not possible to determine what the problem is.
     
    What dimension of your matrix represents the time-domain data of your EEG? I assume ‘channels’ is your EEG data and ‘trials’ represents some event. The problem is that EEG is usually sampled at a relatively high rate, so 330 samples could represent only a few seconds of data, at most.


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