[Eeglablist] dipfit accuracy

[Makoto Miyakoshi]

Dear Iman,

> “…,  [DIPFIT] failed to distinguish two widely spaced sources if they
oscillated at the same frequency and had the same temporal dynamics”

Without reading the paper sited, this is rather a severe condition. It is
not surprising that some method fails there.

According to brain's functional mapping principle, two separate cortical
areas should not really get activated together in perfect synch. We do use
that assumption when we use ICA (i.e. functional independence == temporal
independence of EEG source activities).

Makoto

On Sun, Nov 23, 2014 at 11:02 PM, Iman Mohammadrezazadeh <
irezazadeh at ucdavis.edu> wrote:

>  HI EEGLABERS,
>
> I have been reading  “Comparison of spatial and temporal independent
> component analyses of electroencephalographic data: A simulation study
> http://dx.doi.org/10.1016/j.clinph.2013.02.011 “ and it stated :
>
> “…,  [DIPFIT] failed to distinguish two widely spaced sources if they
> oscillated at the same frequency and had the same temporal dynamics”
>
>
>
> Have anyone else experienced the same phenomena using DIPFIT?
>
> Best
>
> Iman
>
> ============================================
>
> *Iman M.Rezazadeh, Ph.D. , M.Sc., B.Sc.*
>
> Research Associate II
>
> UCLA David Geffen School of Medicine
>
> Semel Institute for Neuroscience and Human Behavior
>
> 760 Westwood Plaza, Ste 47-448
>
> Los Angeles, CA  90095
>
> http://www.linkedin.com/pub/iman-m-rezazadeh/10/859/840/
>
>
>
>
>
>
>
>
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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