[Eeglablist] MEG and EOG channels

[Stephen Politzer-Ahles]

Thanks, Anda!

On Thu, Mar 8, 2012 at 4:29 PM, Anda Popescu <apopescu at kumc.edu> wrote:

>
>  Hi Steve,
>
> Get the data with a=EEG.data; then multiply the MEG channel data with one
> factor and the EOG with another:
> say EOG is channel 152, then EEG.data(1:151,:)=factorMEG *
> EEG.data(1:151,:); EEG.data(152,:)=factorEOG * EEG.data(1:152);
> Try some factors and see what works. After you get the right factors,
> resave the dataset to keep the scaling.
>
> Anda
>
>
>  Anda Popescu, PhD
> Senior Research Associate
>
> Hoglund Brain Imaging Center
> Mail Stop 1052
> 3901 Rainbow Boulevard
> Kansas City, KS 66160
>
> email: apopescu at kumc.edu
> website: http://www.kumc.edu/hoglund/
> phone: (913) 945 6276
> fax: (913) 588 9071
> >>> Stephen Politzer-Ahles <politzerahless at gmail.com> 3/8/2012 3:29 PM >>>
>
> Hello all,
>
> I have imported some data recorded from a CTF system with 151 MEG channels
> and 2 EOG channels. I am interested in scrolling through the data (either
> continuous or epoch-by-epoch) to manually reject artifacts. Normally when I
> do visual artifact rejection I look at the scalp and EOG channels together.
> For this data, however, the MEG and EOG channels get plotted using the same
> scale, which makes neither one show up well (see
> http://imageshack.us/photo/my-images/687/eeglabctfdatascaledfore.png/ and
> http://imageshack.us/photo/my-images/811/eeglabctfdatascaledform.png/).
> Does anyone know if it's possible in eegplot() to show the MEG and EOG
> channels at different scales?
>
> Thank you,
> Steve Politzer-Ahles
>
> --
> Stephen Politzer-Ahles
> University of Kansas
> Linguistics Department
> http://www.linguistics.ku.edu/
>



-- 
Stephen Politzer-Ahles
University of Kansas
Linguistics Department
http://www.linguistics.ku.edu/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20120309/bbd39f37/attachment.html>