[Eeglablist] The number of removed components

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Tue Nov 4 12:11:30 PST 2014

Dear Bin,

We only use up to around 20 ICs that is confirmed to be brain EEGs
regardless of the channel number.

By the way you can't say how many IC removal is appropriate. If you remove
IC1-10 then you'll remove more than 50% of your data variance, while if you
remove IC90-100 it could be less than 1%.


On Wed, Oct 29, 2014 at 1:22 PM, Bin Wang <binwang87828 at gmail.com> wrote:

> Hi, everyone,
> One simple question: I am using ICA to remove the artefact right now. How
> many removed components is reasonable? I am using a completely automatic
> algorithm (ADJUST) now. It seems work for most of subjects. But, it is
> wired for one subject, I need remove 20 components of 60. Is it reasonable?
> Thank you in advance,
> Bin
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Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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