[Eeglablist] need help/guidance in epoching dataset in EEGLAB

[S Saleem]

Thank you so much for your help!

I was able to extract sub-set of 60s using pop_select box, but then I
manually made the events.txt file, as follows:
latency type duration
   1        emo  60

Then I included this event file into dataset using the file-->Import Event
Info--> from Matlab array or ascii file --> popimport_event() box.

Now I 'm trying to figure out how to make 1-2 s epochs/trials of this
event. Any guidance, please?

Sameera Saleem



On Mon, Dec 9, 2019 at 11:37 PM Ramón Martinez <nucleuscub at gmail.com> wrote:

> Dear Sameera,
>  If I understood well your problem, you may want to look at  pop_select
> (from the EEGLAB GUI:  Edit > Select data ).
>  Hope this helps,
> Ramon
>
> On Mon, Dec 9, 2019 at 8:22 AM S Saleem <samsaleem at gmail.com> wrote:
>
>> Hello all,
>>
>> I am new to EEGLAB.
>> I need to perform ICA on a stimulus-dataset, collected while the subject
>> watched an emotion-video.
>> I have done preprocessing.
>> the dataset is continuous, with 25473 rows of EEG signals recorded from
>> scalp electrodes, with a sampling rate of 128 Hz, giving a duration of 199
>> seconds.
>> From this continuous data, I need to extract the last 60 seconds [for
>> further analysis leading to ICA and classification] and write an
>> events-file. I need to know how to write this  file.
>> The tutorial at the link: [
>> https://sccn.ucsd.edu/wiki/A02:_Importing_Event_Epoch_Info] contains an
>> events file having labels of Latency, Type, Position/Duration
>>
>> Can anyone please guide me on how to fill the above labels?
>>
>> Thank you,
>>
>> Sameera Saleem
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>
> --
> _____________________________________________________
> Ramon Martinez-Cancino
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>