[Eeglablist] Urgent help

[Andria Lan]

Dear Makoto,

Thanks a lot for your prompt reply and the useful link. However, I don't
have any events (markers) for participants' recorded data. I have only the
signal resulting from the task.

Here is the scenario:

For the sake of clarity (for now), I have:

a) 30 subjects
b) 2 conditions.
c) 10 visual task trials for each condition.
d) subjects only need to see the trials.
e) not button pressing-->no ERP analysis (analysis only based
"time-frequency" or "ERSP")

My questions:

1- For first subject, how did you recommend saving the recorded data
(during the experiment) to be used later at preprocessing stage and STUDY
option?

2- However, do you recommend *ALWAYS* using **only** one file to save the
data for each subject (all conditions) with both ERP and ERSP analysis?


​​​
 STUDY for loading the data.png
<https://drive.google.com/file/d/0B430Bz2U6pH-N0J1TnJITk5rblk/view?usp=drive_web>
​
Thank you.
Andria

On Fri, Jan 13, 2017 at 3:30 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
wrote:

> Dear Andria,
>
> If you follow our recommended preprocessing steps, you don't need to
> average any data before STUDY does it on it own.
>
> > is it enough (and correct way) loading the data files (for each subject)
> one-by-one under each condition using the “STUDY” option of EEGLAB?
>
> Do not separate .set into conditions. See this section.
> https://sccn.ucsd.edu/wiki/Makoto%27s_preprocessing_
> pipeline#Create_STUDY_.2801.2F05.2F2017_updated.29
>
> Makoto
>
>
>
> On Thu, Jan 12, 2017 at 1:58 AM, Andria Lan <andrialan108 at gmail.com>
> wrote:
>
>> Dear EEGLAB list,
>>
>>
>>
>> I need your advice about implementing this scenario using EEGLAB toolbox.
>>
>> I have this issue and I need your advice:
>>
>>
>>
>> I performed my experiment on several subjects, the task doesn't required
>> any events because it's only about watching several trials where each
>> belongs to one specific condition. Hence, I ended up with several data
>> files for each subject. In addition, I don’t have any epochs in those
>> files, and my aim is performing time-frequency analysis. Now, in order to
>> do such analysis using EEGLAB toolbox, is it enough (and correct way)
>> loading the data files (for each subject) one-by-one under each condition
>> using the “STUDY” option of EEGLAB?
>>
>>
>>
>> Do average the results (files) for each subject is required at this
>> stage, or by using the STUDY option this method will be accomplished
>> automatically?
>>
>>
>>
>> Any help would be highly appreciated.
>>
>>
>>
>> Thanks.
>>
>>
>> Andria
>>
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>
>
>
> --
> Makoto Miyakoshi
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>
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