[Eeglablist] EEG Coherence combination

[Makoto Miyakoshi]

Dear Kleber,

> Thus, I would get X values (one for each electrode),
instead of X * Z values in this block.

This is asking how to reduce data into reasonable representative values.
You can take mean, median, etc, but it's really up to you. I've often seen
people take a window mean in the time-frequency plot.

Makoto

2013/5/31 Kleber de Aguiar <kaguiar at cos.ufrj.br>

> I got a similar problem like that. But in my case, I got a group of
> electrode
> values for a certain number of channels, for instance: X channels and Z
> samples of one block (Z instants of time) of a long-term recording.
> So, I have a universe of X * Z measurements and I want to combine the Z
> values
> for each electrode in order to achieve the followwing goal: One value that
> could express all the Z measurements for a electrode during this block of a
> long-term recording. Thus, I would get X values (one for each electrode),
> instead of X * Z values in this block.
>
> Best regards,
> Kleber
>
> On Thu, 30 May 2013 01:48:46 -0700 (PDT), T. Almabruk wrote
> > Hi List
> > I have a question about combining coherence measurement for multi
> > electrodes. I mean If I calculate the coherence between each pair in
> > a dataset of 40 electrodes. Is there any way to combine theses
> > measurements in one measure I need a way better that averaging. or
> > any idea that help me to have just one measurement instead of this
> > big number of measurements   Cheers, Tahani
>
>
> --
> Programa de Engenharia de Sistemas e Computação
> PESC/COPPE/UFRJ
> Visite nossa página web (http://www.cos.ufrj.br)
>         ------***------
> Kleber de Aguiar
> Tecnólogo em Sistemas de Computação
> Mestrando em Engenharia de Sistemas e Computação - PESC/COPPE/UFRJ
> Tutor Presencial CEDERJ/UAB - Curso de Computação UFF
> Twitter: @kleberIAguiar
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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