[Eeglablist] All red or blue ICA

[Julia Basso]

Dear all,

I have a 20 channel EEG system and after cleaning the data by first
conducting a band pass filter than cleaning epoched data by visual
inspection, I am running ICA to detect and remove eye blinks and eye
movements.

My question is in regards to ICs that are distinctly all blue or all red.  My
instinct is to remove these ICs (and when I do, the data looks cleaner)-
but I wanted to get your opinion.  What does this type of IC indicate?  Is
it merely noise in the system?

Best,

Julia

-- 
*Julia C. Basso, PhD, CYT*
*Post-doctoral Research Associate*

*New York University*
*Center for Neural Science*
*Suzuki Laboratory*
*4 Washington Place, Room 809*
*New York, NY  10003*
*(212) 998-3969*
www.juliabasso.com
*www.suzukilab.com <http://www.suzukilab.com>*
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