[Eeglablist] What is identical ICA decompositions and what is differenct ICA decompositions?

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Thu May 29 11:30:33 PDT 2014

Dear Snow,

Don't apply ICA on each condition separately. I mean, scientifically that
is not wrong, but EEGLAB is not designed to work in that way. Instead, you
should run ICA on a data set with all conditions, and conditions should be
separated after ICA. In this way different conditions can have same
independent components, and difference of activities can be tested *within*
independent components.


On Thu, May 29, 2014 at 5:06 AM, 张雪 <zhangxue at psych.ac.cn> wrote:

> Dear Makoto
>          I was using  EEGLAB's studyset analysis. I did ICA for every
> condition of every subject. All the ICA numbers are 66. But When I do the
> preclust in study, the program still remind me different ICA decomposition
> and I couldn't do the following analyses.
>           So, I want to know, what kind of ICA decompositions are
> identical?
>           Best wishes
>  Zhang Xue

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