[Eeglablist] Copy ICA weights from 1Hz highpass to 0.1Hz highpass

[Isaiah Innis]

Hello eeglablist:


Some of our datasets have displayed a large amount of slow frequency
drifts. See here for an example:
https://onedrive.live.com/redir?resid=A1398B0A4C8F85DE!2199&authkey=!AD6I0359QqJH5eA&v=3&ithint=photo%2cpng

In order to address this, we have tried the suggestion mentioned on this
list of:
1 Filtering each dataset with a 1Hz highpass
2 Run ICA on this dataset
3 Copy the ICA weights from the 1Hz dataset and apply them to our normal
0.1Hz filtered dataset

However when viewing the components in the 0.1Hz dataset (the one we copied
weights onto), I have noticed jagged spectra in the properties of several
components.
Here are a few examples (the 1Hz component is on the right in the image,
and the 0.1Hz is on the left):

https://onedrive.live.com/redir?resid=A1398B0A4C8F85DE!2191&authkey=!ALiODmU2Hqc5HZE&ithint=folder%2cpng

Is there something wrong here? These steps were suggested in vol 130 issue
5 of the eeglab digest for reference.

Thank you in advance,

-- 
Isaiah Innis
Indiana University '13
EEG Technician, IUB IRF
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