[Eeglablist] After epoching data the EEG.event is empty []

[Makoto Miyakoshi]

Dear Sahar,

Just my guess... try [-1 4] for epoching. I mean, it does not sense to me
to use [1 4] because this window does not contain 0.

Makoto

On Tue, May 12, 2015 at 12:44 PM, Sahar Selim <sahar.soussa at gmail.com>
wrote:

> Dear all,
>
> Thanks for trying to help
>
> These are the details of my steps: *(Check Screenshots of my steps)*
>
> *Steps of loading data in EEGLAB*
> 1) File -> Import Data -> Using the BioSig Interface
>
> 2) Choose a data File: BCI Competition Dataset IV 2a-> A01T.gdf
>
> 3) Pop_biosig() : Select Channels 1,10,20
>
> 4) Tools -> Extract Epochs: Specify [start & end] seconds
>
> 5) Select Event Types : Motor Imagery Events 769, 770, 771, 772
>
> 6) Save new Dataset
>
> 7) Remove Baseline
>
>
> Events appear to be none :(
>
> I tried
>
> EEG = eeg_checkset(EEG, 'makeur');
> But my problem is that when I epoch data the event is none not the urevent
>
> Even though epochs appear to be 288 epochs they appear as an empty set in
> the matlab
>
> please tell me if I'm missing anything
>
> *Screenshots of my steps*
>
>
> https://www.dropbox.com/s/fsm4bik8aktgzex/EEGLAB%20Commands%20for%20extracting%20Epochs.pdf?dl=0
>
> or
>
> https://www.mediafire.com/?rj74g47okmfddqq
>
> On Tue, May 5, 2015 at 4:52 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
> wrote:
>
>> Dear Sahar,
>>
>> Sorry for the trouble.
>> I can't think of any reason for it though.
>> Looks like you manually tried to take care of EEG.urevent (your
>> description seems interrupted by the way) but it's better to leave EEGLAB
>> to take care of it. If you want to make it, use EEG = eeg_checkset(EEG,
>> 'makeur'); (or something like that) to force EEGLAB to recreate it.
>>
>> To let us troubleshoot the problem, you should tell us more detail about
>> the process you take. Generally speaking, I don't hear very often about the
>> trouble in managing events.
>>
>> Makoto
>>
>>
>>
>> On Wed, Apr 22, 2015 at 10:48 AM, Sahar Selim <sahar.soussa at gmail.com>
>> wrote:
>>
>>> Hello
>>>
>>>
>>>
>>> I'm using BCI competition IV 2a. I've loaded my data using the EEGLAB.
>>> At this point the EEG.ur = EEG.event
>>>
>>>
>>> My problem is that after epoching the dataset the EEG.event is empty []
>>>
>>>
>>> I need to know the corresponding event of each epoch & the corresponding
>>> latencies of these events
>>>
>>>
>>> Thanks in advance
>>>
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>>
>>
>>
>> --
>> Makoto Miyakoshi
>> Swartz Center for Computational Neuroscience
>> Institute for Neural Computation, University of California San Diego
>>
>
>


-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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