[Eeglablist] How should I interpret this strange component?

[Yuan-fang Chou]

Dear Makoto,

Thanks for your comment.I will check my original dataset  soon.But could
you please explain to me how 1 Hz high pass filter could make such a
strange component? I'm really naive on this.
2012/5/23 Makoto Miyakoshi <mmiyakoshi at ucsd.edu>

> Dear Yuan-Fang,
>
> That is probably because you used a 1Hz high-pass filter. Probably
> your original dataset has a very strong sub-1Hz activity. Please check
> that possibility.
>
> Makoto
>
> 2012/5/22 Yuan-fang Chou <distancejay at gmail.com>:
> > Dear list,
> > I filtered my 64 channels data at 1~30Hz,and epoched it before running
> > ICA.Then I got  one of  the last a few components in the link below.It
> > appears that this component oscillates steadily at about 1 Hz
> rhythm,which
> > looks rather strange. Could anyone tell me how to explain this
> component's
> > activity?
> >
> > https://www.dropbox.com/s/mgadt1q7scn9vsf/component.PNG
> >
> > --
> > Yuan-Fang Chao
> > School of Psychology
> > SouthWest University
> > Beibei,Chongqing,China
> >
> >
> >
> >
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>
>
> --
> Makoto Miyakoshi
> JSPS Postdoctral Fellow for Research Abroad
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>



-- 
Yuan-Fang Chao
School of Psychology
SouthWest University
Beibei,Chongqing,China
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