[Eeglablist] Artifact removal validation

[David Groppe]

Hi Borna,
  I know of one algorithm for automatically identifying components 
corresponding to blinks and eye movements:

Joyce, C.A., Gorodnitsky, I.F. and Kutas, M. Automatic Removal of Eye 
Movement and Blink Artifacts From EEG Data Using Blind Component 
Separation, Psychophysiology, 2004, 41(2), 313-325.

  They provide a bit of evidence that the method works and it could make
your identification of such artifacts objective.
   cheers,
     -David

dgroppe at cogsci.ucsd.edu


On Tue, 19 Jun 2007, Borna Noureddin wrote:

> Hello,
> 
> I have been working through the most recent tutorial on artifact 
> rejection, and have a question about validation.  How can I validate or 
> evaluate the performance of ICA for artifact removal?
> 
> The tutorial gives some steps for identifying artifact components, but 
> they are quite subjective.  This is further compounded by the fact that, 
> given the same set of data, running ICA gives a different set of 
> components each time.  So, even with an acceptable validation method, 
> it's unclear how I can objectively and reliably apply that method.
> 
> Is there, for example, a "post-artifact-removal" version of the tutorial 
> dataset that can be compared with the original tutorial dataset provided 
> with EEGLAB?  And if so, is there documentation about how precisely the 
> artifacts were removed?
> 
> Thanks,
> Borna Noureddin
> 
> 
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