[Eeglablist] How to save EOG channels from ASR processing?

[Francesco Marini]

Hi Akshay,

I think your approach would be fine. It's unclear from what you wrote if
you apply ASR only or channels rejection too. If you do both channel
rejection and ASR, you may choose to run clean_rawdata in two separate
steps (1-channel rejection, 2-ASR), and perform step 1 above *after*
channel rejection. This would take care of removing any bad channel in your
externals, which may otherwise create problems with ICA later.

Best,
Francesco

On Mon, Oct 22, 2018 at 3:15 AM Akshay Kumar <akshayksharma94 at live.com>
wrote:

> Hi,
>
>
> I have been following Makato's pipeline for EEG processing.
> As the pipeline wants me to run ASR before ICA and from previous
> discussions I got to know that ICA performs better when EOG channels are
> included with other EEG channels when having the same reference.
>
> ASR removes EOG channels and previous discussions do not provide any
> concrete method to save EOG channels.
>
> What I am thinking to save EOG channels is:
>
>
>    1. Make two copies of data.
>    2. Run ASR on copy A and see what channels do the ASR removes apart
>    from the EOG channels.
>    3. In copy B, removes those channels manually from EEGLAB.
>    4. Do ICA on copy B.
>
> This way I removed the uncorrelated channels and saved the EOG channels as
> well.
>
> Can you please advice on my approach?
>
>
> Thanks,
>
> Akshay
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-- 
Francesco Marini, PhD
Postdoctoral Research Associate
Swartz Center for Computational Neuroscience – UC San Diego,
& Psychology Department – University of Nevada Reno

Personal website: fmarini.weebly.com
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