[Eeglablist] Importing Neuroscan .eeg epoched data

[John J.B. Allen]

Hi Stephen

The codes you want are in EEG.event.epochtype instead of in EEG.event.type
(which just has the 'TLE' codes).

The code below will get this fixed for you.

for n_event = 1:length(EEG.event)
    EEG.event(n_event).type = EEG.event(n_event).epochtype
end
eeglab redraw
pop_eegplot( EEG, 1, 1, 1);

John

On Fri, Apr 29, 2011 at 12:48, Stephen Politzer-Ahles <
politzerahless at gmail.com> wrote:

> Hello all,
>
> I am interested in importing epoched Neuroscan data into EEGLAB to perform
> ICA artifact correction (the continuous files are much too large to import
> without chopping them into several smaller files each). I tried epoching the
> files in Neuroscan's software while including all conditions (such that each
> epoched file contained epochs with different trigger values, e.g.
> '1','2','3','4'), but after importing into EEGLAB every epoch seems to have
> the same trigger value, 'TLE'. I had intended to extract the epochs for each
> condition into separate datasets to perform averaging and further analysis
> by condition, but of course if the epochs no longer have triggers that
> identify their condition that is difficult.
>
> Does anyone know how to preserve the event/trigger information when
> importing Neuroscan .eeg data? Any suggestions would be much appreciated!
>
> Best,
> Stephen Politzer-Ahles
>
> --
> Stephen Politzer-Ahles
> University of Kansas
> Linguistics Department
> http://www.linguistics.ku.edu/
>
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