[Eeglablist] about applying ICA on 60 channel EEG

[Arnaud Delorme]

Dear Kourosh,

you should attempt to find the channel location for this dataset. It it is standard 10-20 and you have the channel labels, EEGLAB will find the standard positions for you (menu Edit > Channel location).
Except for blink and maybe temporal muscle components, it is very hard to recognize ICA components based on their time or spectral activity alone.
Best,

Arno

On May 28, 2012, at 1:27 PM, Kourosh Maboudi wrote:

> Dear list,
> 
> I'm working on motor imagery EEG classification. I use dataset IIIa from BCI competition III. As you may know this dataset has 60 EEG channel and at first I want to proccess data by applying ICA. I don't have channel locations, so I can't make ICs topographic maps by demixing matrix and use those to choose between high number of output ICs. So, I need use some other features to do this. In my mind, somehow I should reduce the number of ICs that I want to choose between them first but I don't know how to do it.  
> please suggest your opinion about best procedure that I can employ to choose between ICs. thank you in advance.
> 
> Kourosh Maboudi,
> Master of science,
> Electrical engineering department,
> Iran University of Science and Technology
> 
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