[Eeglablist] Questions about performing data preprocessing

[Makoto Miyakoshi]

Dear Jason,

Sorry for being late (and unclear).

> 1- If we have several datasets that are located in several files, do we
need to perform the preprocessing steps to those files one-by-one?

Yes. Write code to save your time!

> 2- What protocol/option in EEGLAB is able to achieve step number 12
(Estimate equivalent current dipoles)?

Use DIPFIT2.3 which is by default included in the EEGLAB distribution

> 3- In step 13 (Create STUDY), is there any way to apply data
preprocessing for the whole sets of STUDY,i.e., each set inside the STUDY?

No I don't think so. I mean, of course you can write batch code to
automatize all the steps.

>4-In the same step 13, there was a statement "Importantly, creating STUDY
means you clean your data". Does that mean, we need to perform data
cleaning after creating a STUDY, or this statement emphasizes on the
importance of performing data cleaning before creating a STUDY?

When creating STUDY, it will kick out outside-brain dipoles and those that
with >15% residual variance, which will remove 70%- ICs. So, the ICs
included to STUDY is already selected and clean (to certain extent; it's
not perfect though).

Makoto

On Sat, Sep 19, 2015 at 8:17 AM, jason roger <jasonroger8 at gmail.com> wrote:

> Dear all,
>
> In Maktoto's preprocessing stage, I have some issues that are required
> more clarification.
>
> 1- If we have several datasets that are located in several files, do we
> need to perform the preprocessing steps to those files one-by-one?
> 2- What protocol/option in EEGLAB is able to achieve step number 12
> (Estimate equivalent current dipoles)?
> 3- In step 13 (Create STUDY), is there any way to apply data preprocessing
> for the whole sets of STUDY,i.e., each set inside the STUDY?
> 4-In the same step 13, there was a statement "Importantly, creating STUDY
> means you clean your data". Does that mean, we need to perform data
> cleaning after creating a STUDY, or this statement emphasizes on the
> importance of performing data cleaning before creating a STUDY?
>
> Thanks.
> Jason
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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