[Eeglablist] interpolation of bad channels after ICA

[Marco Buiatti]

Dear Makoto and John,

thanks for your feedback and links to advanced preprocessing tools (and
sorry for the 1 year delay!).

However, I still do not have an answer to my basic question on EEGLAB's
current options for reinterpolating removed channels.

I reformulate it here:

I would like to:

1) Remove bad channels
2) Run ICA and remove artefacted ICs
3) Reinterpolate bad channels, preferably back in the same channel order as
before (e.g. if I removed channel 12, I would like it to be back as the
12th channel)

The button 'Select from removed channels' in Tools > Interpolate Electrodes
seems perfect to perform this operation, but if I remove channels following
EEGLAB's instructions (
https://sccn.ucsd.edu/wiki/Chapter_01:_Rejecting_Artifacts) Edit > Select
data, the button 'Select from removed channels' in Tools > Interpolate
Electrodes
is still not available. Which procedure should I use to make it available?

Thanks!

Marco


On 2 September 2015 at 19:50, Makoto Miyakoshi <mmiyakoshi at ucsd.edu> wrote:

> I agree with John.
> FYI, check these links.
>
> http://journal.frontiersin.org/article/10.3389/fninf.2015.00016/abstract
> http://sccn.ucsd.edu/wiki/Makoto's_preprocessing_pipeline
>
> Also check out clean_rawdata()
> http://sccn.ucsd.edu/wiki/Plugin_list_process
>
> Makoto
>
> On Sat, Aug 29, 2015 at 2:03 AM, John Fredy Ochoa Gómez . <
> jfochoaster at gmail.com> wrote:
>
>> I also recommend the PREP pipeline that have robust detection and
>> interpolation algorithms for the bad channels
>>
>> On Sat, Aug 22, 2015 at 1:39 AM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
>> wrote:
>>
>>> 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
>>>
>>> _______________________________________________
>>> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
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>>
>>
>>
>> --
>> John Ochoa
>> Docente de Bioingeniería
>> Universidad de Antioquia
>>
>
>
>
> --
> Makoto Miyakoshi
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>



-- 
Marco Buiatti

Neonatal Neurocognition Lab
Center for Mind/Brain Sciences
University of Trento,
Piazza della Manifattura 1, 38068 Rovereto (TN), Italy
E-mail: marco.buiatti at unitn.it
Phone: +39 0464-808178
https://sites.google.com/a/unitn.it/marcobuiatti/

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