[Eeglablist] Minimum number of electrodes for ICA

[Simon-Shlomo Poil]

Dear Pauline,

If you only want to do artifact rejection using ICA, then I think 11
electrodes should be sufficient. However, the lowest number of
electrodes I have tried was 23, and it worked perfect.

-Simon

--
Simon-Shlomo Poil

Center of MR-Research
University Children’s Hospital Zurich

Webpage: http://www.poil.dk/s/ and http://www.nbtwiki.net


2013/2/20 Makoto Miyakoshi <mmiyakoshi at ucsd.edu>:
> Dear Pauline,
>
> I would say yes because no one would dare to say no. I have 16ch EEG paper
> processed with ICA too! Also, from my unpublished observation, 3ch vs 33ch
> ICA extracted an identical eye blink compoenent (identical in erpimage
> pattern except only for amplitude) so at least it helps you to identify eye
> blinks.
>
> Makoto
>
> 2013/2/20 Pauline Joussain <pauline.joussain at olfac.univ-lyon1.fr>
>>
>> Dear all,
>> I am wondering how many electrodes I need to do ICA with EEGlab?
>> I conducted an EEG study with 11 electrodes (F3, Fz, F4, C3, Cz, C4, P3,
>> Pz, P4 and one electrode for horizontal and one for vertical electro-ocular
>> activity).
>> Do I have enough channels to do ICA? Is this small number of electrodes
>> sufficient to perform an ICA?
>> Thanks in advance.
>>
>>
>>
>>
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>
>
>
> --
> Makoto Miyakoshi
> JSPS Postdoctral Fellow for Research Abroad
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>
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