[Eeglablist] Frequency Analysis

Tarik S Bel-Bahar tarikbelbahar at gmail.com
Sun Jan 24 03:42:39 PST 2010


Hello Chaitanya,

The eeglab spectopo function (see help spectopo) can help you compute
frequency data and graphics,
and as per previous communications on eeglablist, computes hanning windows
using matlab's pwelch function.
The eeglab time-frequency function may also be of help.
Regarding ICA, I assume you are removing unwanted components from data that
is analyzed.
Let me know if you have success, and if you are able to complete your
mission within eeglab.

All the best,
Tarik



********************************************************************************************************************************
Tarik Bel-Bahar, PhD
Department of Clinical, Educational, and Health Psychology/ University
College London
AFC-UCL Developmental Neuroscience Unit / Anna Freud Centre, 21, Maresfield
Gardens/ London NW3 5SD
Tel: +44 (0) 20 7443 2212 / Receptionist: +44 (0) 20 7794 2313/ Fax: + 44
(0) 20 77946506
********************************************************************************************************************************


On Fri, Jan 22, 2010 at 2:43 AM, chaitanya bhavaraju <
chaitanya1686 at gmail.com> wrote:

> Dear All,
>
> I am new to EEG analysis. Firstly, I would like to know that is it
> sufficient to use ICA analysis for minimizing the Artifacts. I used runica
> buit in function of the EEGLAB for ICA analysis, do i have to use another
> one. After ICA analysis I exported the data into a text file and then tried
> FFT on that data. Is it the correct procedure to follow. Prior to perform
> the FFT, i created a hanning window for the required length and then
> multiplied it with the specific channel epoch of same length and then I did
> FFT.
>
> These questions may be too basic for you but I am not from electrical
> background and I really need help from you people in analyzing the data.
>
> thank you,
>
> Chaitanya
>
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