[Eeglablist] Issue with the pop_subcomp function

[Makoto Miyakoshi]

Hi Arnd,

I'd love to see the data! Can you send it to me please?

My guess is that your ICA had a rank issue.

Makoto

On Fri, May 24, 2024 at 3:58 PM Arnd Meiser via eeglablist <
eeglablist at sccn.ucsd.edu> wrote:

> Dear community,
>
> I am currently running an ICA on my pre-processed EEG data (band filter,
> removal of bad epochs) and try to apply the weights of the ICA to the raw
> data as is recommended. After using the function pop_subcomp and thereby
> removing the identified bad components (lateral eye-movement, heartbeat)
> from the data, the amplitude of the signal is suddenly unrealisticly high
> (roughly from the hundreds to the billions). It seems I can downscale the
> signal again to reasonable values, but I would like to understand what is
> happening here. Has anyone had this issue before? When I apply the weights
> to the processed data, everything works the way I would expect it to.
> I am grateful for any pointers.
>
> Thanks and all the best,
>
> Arnd Meiser
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