Estimating no. of sources to carry out BSS using ICA
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If I want to apply Independent Component Analysis in order to carry out filtering of EEG signals(say from 20 electrodes), I need to input the number of sources to the algorithm.
How am I supposed to make a reasonable of estimate of how many sources combine to form the EEG signals that I end up recording?
There is no real way of knowing apriori the no. of sources... so how does one go about solving this problem? Ideas anyone?
Image Analyst il 27 Dic 2012
I don't understand. Are you saying that somehow your 20 EEG signals all got added together to form one signal and now you need to extract back out all 20 individual signals? Why would that happen? How could they all get combined like that in the first place?