[Eeglablist] signal prediction in Matlab

[Arnaud Delorme]

Dear Ibti,

in addition to Makoto's suggestion, you can also interpolate the data to a "fake" data channel using the eeg_interp function. From the GUI, you could also add a channel and use the menu "Tools > Interpolate electrodes". This function will use spherical interpolation while topoplot does not use spherical interpolation.

Best,

Arno

On 26 Mar 2013, at 09:15, Ibtissem Khouaja b.Fraj wrote:

> 
> Hello, 
> thank you for your reply.
> 
> My project is just to insert a new point that does not really exist on the scalp.
> After the prediction of the amplitude variation of this point at any time, it will be covered by an electrode and we test the validity of the prediction algorithm.
> For example, between points Cz, Pz and C4  that already knows the amplitude variation, we seek a point X which lies between these three points.
> 
> There exists an algorithm very useful in image processing and in increasing the number of pixels in an image, is called the bilinear interpolation algorithm. I don't know if it can be helpful in my project or not.
> I work with Matlab and I need some algorithme to solve the problem.
> 
> help me please, thank you!
> 
> Ibti ssem
> 
> 
> 
> > Date: Tue, 12 Mar 2013 14:27:52 -0400
> > Subject: Re: [Eeglablist] signal prediction in Matlab
> > From: vivek.yadav at gmail.com
> > To: ibtissem.khouaja at live.fr
> > 
> > hello,
> > try spherical interpolation in EEG.
> > thanks
> > 
> > 
> > On Tue, Mar 12, 2013 at 4:33 AM, Ibtissem Khouaja b.Fraj
> > <ibtissem.khouaja at live.fr> wrote:
> > >
> --------------------------------------------------------------------------------
> 
> 
>  Hi all,
> > &g! t; knowing the location of recording signals on the scalp, I want to pred new
> > > locations not covered by electrodes to refine the result.
> > > I need an algorithme in Matlab to do the linear prediction from the matrice
> > > describing 18 sites.
> > >
> > > hope you understand my question.
> > > Thank a lot.
> > >
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> > 
> > 
> > -- 
> > Vivek Yadav, PhD
> > Post-Doctoral Scholar,
> > Movement Neuroscience Lab,
> > 29 Rec Hall,
> > Pennsylvania State University,
> > University Park, PA-16801
> > 
> > "Nothing in life is to b! e feared, it is only to be understood." ~ Marie Curie
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