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

[Makoto Miyakoshi]

Dear Omid,

If you have EEG.data, EEG.icaweights, and EEG.icasphere it should work.
What does the error message say? Could you copy it here?

Makoto


2013/8/6 omid abbasi <omidabbasi2000 at gmail.com>

> Dear Maktoo
>
> Thank you for your answer.
> Yes. I have these two matrix (EEG.icaweights and EEG.icasphere)  in my EEG
> structure but eeg_checkset doesn't work.Is there any solution to i
> calculate component activation using for example these matrix?
>
> Best Wishes
> Omid
>
>
> On Wed, Aug 7, 2013 at 4:40 AM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>wrote:
>
>> Dear Omid
>>
>> In order for eeg_checkset to work you should have EEG.icaweights and
>> EEG.icasphere. Please check if you have these two in your EEG structure.
>>
>> Makoto
>>
>>
>> 2013/8/6 omid abbasi <omidabbasi2000 at gmail.com>
>>
>>> 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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>>>>>>    1. 2013 EEGLAB workshop at UCSD following SFN,       November
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>>>>>> Cc:
>>>>>> Date: Thu, 1 Aug 2013 21:11:55 -0700
>>>>>> Subject: [Eeglablist] 2013 EEGLAB workshop at UCSD following SFN,
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>>>>
>>>>
>>>> --
>>>> Makoto Miyakoshi
>>>> Swartz Center for Computational Neuroscience
>>>> Institute for Neural Computation, University of California San Diego
>>>>
>>>
>>>
>>
>>
>> --
>> Makoto Miyakoshi
>> Swartz Center for Computational Neuroscience
>> Institute for Neural Computation, University of California San Diego
>>
>
>


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