[Eeglablist] Clustering ICs across sessions but within subjects

Ghislain d'Entremont ghislaindentremont at gmail.com
Wed Aug 9 11:29:11 PDT 2017

This is very helpful. Thank you.

*Ghislain d'Entremont*
BSc, Neuroscience, Honors
MSc Kinesiology Candidate
Dalhousie University
tel: 902-802-5671 (text)

On Wed, Aug 9, 2017 at 2:57 PM, Tarik S Bel-Bahar <tarikbelbahar at gmail.com>

> Hello Ghislain, some recommendations below, best wishes.
> 1. the STUDY framework probably can't handle your full design, but it is
> receiving a major update soonaccroding to eeglab developers.
> Please closely review all current STUDY documentation online to determine
> if STUDY can create the analysis your're interested in.
> My bet is that you you can create data to represent each person's session,
> and each person's condition, and
> then you should attempt to build some STUDY versions that compare some or
> all of your conditions.
> Try something simple first, like just focusing on  just the witihn or just
> the the between factors first.
> LIMO EEG plugin for eeglab should also be helpful, check out the
> documentation on that.
> 2. ICA solutions from different days (different recording sessions) often
> give similar IC results, but overall it's not recommended to mix them, as
> solutions can be quite different across different recording sessions (but
> not always).
> 3. You could take all the data that you have for one person, from one
> recording session, and then ICA all that data for that single subject. This
> would at least give you a valid ICA decomposiiton for that subject, for
> that session. Then you can use that ICA info to clean the data of
> artifacts, and/or analyze the IC information.
> 4. You can compare the ICA results from the same subject from different
> recrdogin sessions. There you should see basically the same ICs, if it is
> the same person.
> 5. Note that some researchers prefer to do ICA across all available
> conditions for a subject, and some do ICA for specific conditions
> (especially if the conditions are very different)
> 6. Gift-EEG from the Calhoun group may also be able to help you find solid
> ICA solutions across your study, subjects and conditions.
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