[Eeglablist] Help with difference in the frequency bands

[Tarik S Bel-Bahar]

Hello Sandeep, some responses to your queries below. Cheers!


***********BEGIN FOR SANDEEP********************************
You can use eeglab to make separate files filtered at different frequency
bands.
Alternatively you can use the spectopo function (spectral computation in
the eeglab GUI). You can search on Google or review the documentation on
the function by typing "help" or "doc" for whatever eeglab function you;re
trying to run.

If you have not had a chance to already, be sure to do the online eeglab
tutorial with the tutorial data, to learn how to use the gui and process
data in eeglab.
You can also check out the videos from the eeglab summer school which are
useful for beginners with eeglab.
Also, you can search for your topic (and answers) by searching "eeglablist
+ your topic" in google.
Remember anything you do in the gui, you can use eegh after to get the
actual code that eeglab runs to build a script.
See also the eeglab online tutorials about scripting, accessing the
variables in eeglab, and accessing the output.

If you generate output via the spectopo function, you can review the
spectral estimates and find for yourself the peak channel.

If you want to make comparisons across conditions, you can use the study
functions, which can help you determine if there are differences between
the conditions. If you activate the statistical functions in the STUDY, it
will show you which channels/regions have a significant condition effect.
You may access the output data from Study for further analyses.
If you're not familiar with study, do the online STUDY tutorial with STUDY
data to get familiar with how to run STUDY in eeglab.

Eeglab partly uses matlab functions for filtering. You can find on your own
via Google ways to bandpass or estimate spectral estimates with just matlab
without using eeglab.







On Wed, Nov 23, 2016 at 12:41 AM, Sandeep B <b.sandeep29 at gmail.com> wrote:

> Dear Colleagues,
>
> I have data of 14 electrodes, with respective to 3 different tasks
> recorded for 2 minutes each.
>
> How do i separate signal for each task into alpha, beta , theta , gamma,
> and delta frequencies. Also how can i look into the differences(or
> difference in percentage level) of each frequency band for the different
> tasks.
>
> is it possible to find the significant channel responsible for the
> different tasks?
>
> Do matlab bandpass filters help in showing up the different frequency
> bands ?
>
> Thank you
> Sandeep
>
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