[Eeglablist] interpolation of bad channels after ICA

[Makoto Miyakoshi]

Dear Marco,

Remove the channel, run ICA, interpolate the removed channel if necessary.
Do not run ICA with the bad channel.

> I don't know how to do step 3.

EEGLAB has a channel interpolation function which user can do it from GUI.

Makoto

On Thu, Aug 20, 2015 at 9:33 AM, Marco Buiatti <marco.buiatti at gmail.com>
wrote:

> Dear EEGLAB Masters,
>
> I have a question concerning the interpolation of bad channels after ICA.
>
> When I identify a bad channel, I would like to:
> 1) run ICA ignoring that channel,
> 2) remove ICs representing artifacts,
> 3) and then reinterpolate the channel.
>
> What's the cleanest way to do that? I know that I can deselect that
> channel when I run ICA (by the way, what is plotted at that channel
> position when I plot the topography of the ICA components?), but I don't
> know how to do step 3.
>
> Ideally, I would like the interpolated channel to be in the same order
> where it was before, so that channel configuration is the same across
> subjects.
>
> I see a button 'Select from removed channels' in Tools > Interpolate
> Electrodes which sounds like solving this issue, but I have not been able
> to activate it.
>
> Thanks for your help,
>
> Marco
>
>
> --
> Marco Buiatti
>
> Neonatal Neurocognition Lab
> Center for Mind/Brain Sciences
> University of Trento,
> Corso Bettini 31, 38068 Rovereto (TN), Italy
> E-mail: marco.buiatti at unitn.it
> Phone: +39 0464-808178
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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