[Eeglablist] Could ICA for clean-up be done within STUDY?
Tarik S Bel-Bahar
tarikbelbahar at gmail.com
Tue Nov 17 21:24:52 PST 2015
Hello Akshay, quick note below, hope it helps, let us know of your progress!
If you're looking at channels for your STUDY analyses,
you do have the option in the STUDY Channel computation GUI to have the ICs
that are marked bad for each subject removed from the channel level
analyses. You can determine which ones are bad before creating the STUDY.
If you're focusing on analyzing the independent sources that give rise to
the EEG, and which are represented by the Independent Components, then you
should focus on working with the ICs and not the channels. In that case,
you can just "not analyze" the artifactual IC's, and do your STUDY analyses
on the ICs across your subjects and experimental conditions.
You can also sort the ICs into existing or new clusters with STUDY while
reviewing the IC clusters, so in a sense you can select which ones go into
the artifact cluster. I'm not sure if that will select the ICs as bad for
Channel Analyses, but it should, and you can give it a try and see what
happens with a practice file or two.
On Sat, Oct 31, 2015 at 8:14 AM, Akshay Maggu <akshaymaggu86 at gmail.com>
> Hi all,
> Wanted to know if the sample data for STUDY available at
> ftp://sccn.ucsd.edu/pub/5subjects_full.zip consists of data after removal
> of non-neurophysiological ICs (from each subject)?
> In short, is it recommended to clean-up data for each subject using ICA,
> before putting in STUDY or could it also be done within STUDY?
> Thanks in advance,
> Akshay Raj Maggu,
> PhD Candidate,
> Laboratory for Language, Learning and the Brain,
> Department of Linguistics and Modern Languages,
> The Chinese University of Hong Kong,
> Hong Kong.
> Webpage: http://www.cuhk.edu.hk/lin/new/people/students/maggu/
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