[Eeglablist] Matrix of ICA component activations (time courses)

[omid abbasi]

Dear Maktoo

Thank you for your answer

EEG.icaact is an empty matrix in my workspace. I applied the command (EEG =
eeg_checkset(EEG, 'ica');) that you said but again EEG.icaact is empty.
What should i do now. Is there any other solution?

Best Wishes
Omid


On Mon, Aug 5, 2013 at 9:25 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>wrote:

> Dear Omid,
>
> It is EEG.icaact that has the size of number of IC x data length. If you
> don't see it, run this
> EEG = eeg_checkset(EEG, 'ica');
>
> Maktoo
>
>
> 2013/8/5 omid abbasi <omidabbasi2000 at gmail.com>
>
>> Hi all
>>
>> I imported an EEG signal with 7 epochs to EEGLAB and i applied ICA to
>> remove some artifacts. Now i can plot ICA component activation (time
>> courses) using plot>component activations. But i can't find the variable or
>> matrix in workspace related to ICA component activation. I know that I can
>> find ICA component using EEG.icawinv matrix in workspace.
>>
>> It means if the ICA decomposition equals:
>>
>> U=WX
>>
>> where X (EEG channel recordings) and U (ICA component activations) are n
>> *t matrices (n channels (rows) by t time points (columns)), and W (ICA
>> weights (EEG.icawinv )) is n* n. I want to know how i can have matrix of U
>> in EEGLAB?
>>
>>
>> Best Wishes
>> Omid
>>
>>
>> On Fri, Aug 2, 2013 at 9:00 PM, <eeglablist-request at sccn.ucsd.edu> wrote:
>>
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>
>
> --
> Makoto Miyakoshi
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>
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