[Eeglablist] epochs of resting conditions

[Temesgen Geberehiowt]

Dear experts

Greetings!!!

My name is Teme i am from Ethiopia currently working in a research in korea
well its my first time to start using this amazing toolbox i tried to study
a lot about it but i seem to be stuck some where.

well our research involves 4 different event and i recoreded the readings
using a mitsar 204 amplifier with using wineeg then i exported the data in
ascii/text format but after few steps of following the online wiki tutorial
of matlab it tells me to add some event feild and mat lab tells me to add
some evemt feilds can any one help me or tell me the steps to analyze this
data? and should i cut and export each events individually please i need
help

With best regards
Teme
Koreatech
On Feb 6, 2013 8:09 AM, "Tarik S Bel-Bahar" <tarikbelbahar at gmail.com> wrote:

> hello,
>
> you can also try the following eeglab function
>
> http://sccn.ucsd.edu/eeglab/allfunctions/eeg_regepochs.html
>
> Convert a continuous dataset into consecutive epochs of a specified
> regular length by adding dummy events of type 'X' and epoching the
> data around these events. The mean of each epoch (or if min
> epochlimits arg < 0, the mean of the pre-0 baseline) is removed from
> each epoch. May be used to split up continuous data for artifact
> rejection followed by ICA decomposition. The computed EEG.icaweights
> and EEG.icasphere matrices may then be exported to the continuous
> dataset and/or to its epoched descendents.
>
> You could also try to do your LORETA or other analysis on the ICs that
> represent your brain dynamics of interest.
>
>
>
>
>
>
> On Mon, Feb 4, 2013 at 5:00 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
> wrote:
> > Dear Francesca,
> >
> >> I'd like to know how can I have epochs of eyes-closed and eyes-open
> resting
> >> conditions signal if I haven't any events?
> >
> > You can add event markers post-hoc. Check 'Edit' - 'Event values'.
> >
> >> I have a continuous signal 2 minutes long and I have to remove artifacts
> >> with ica and then export to loreta
> >
> > ICA does not require epochs so don't worry.
> >
> >> but I need epochs of  2 seconds long ...
> >
> > If you want to generate 2 second long epochs, the work around with GUI
> > would be found again in 'Edit' - 'Event values'. It would be much more
> > efficient if you can code a simple loop to do this job. Try 'eegh'
> > after you use GUI to see if it is interesting for you.
> >
> > Makoto
> >
> >
> >
> > 2013/2/1 francesca miraglia <fra.miraglia at gmail.com>:
> >> Dear experts,
> >> I'd like to know how can I have epochs of eyes-closed and eyes-open
> resting
> >> conditions signal if I haven't any events?
> >>
> >> I have a continuous signal 2 minutes long and I have to remove artifacts
> >> with ica and then export to loreta but I need epochs of  2 seconds long
> ...
> >>
> >> Thanks in advance
> >>
> >> Best regards,
> >>
> >> Francesca Miraglia
> >> IRCCS San Raffaele Pisana Roma
> >>
> >> _______________________________________________
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> >
> >
> >
> > --
> > Makoto Miyakoshi
> > JSPS Postdoctral Fellow for Research Abroad
> > Swartz Center for Computational Neuroscience
> > Institute for Neural Computation, University of California San Diego
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