simulation of a dataset with multiple dipoles
Florian Ph.S Fischmeister
Florian.Fischmeister at UNIVIE.AC.AT
Fri Jul 29 15:33:17 CEST 2005
Litvak Vladimir <litvak at TECHUNIX.TECHNION.AC.IL> writes:
>> I already tried the Besa simulator. Using the dipolesimulator I can only
>> generate data with 150 timepoint. My problem is, that I want to
>> simulate slow cortical potentials having trials of 10 sec length and
>> more.
>
>
> But why don't you change the time axis? The important thing is the
> location of the dipoles and their relative timecourse. Then you can
> rescale the time axis and call that 'slow potentials'. The only
> problem with that is that if you want to add noise in the simulator
> the spectrum of the noise will be wrong. So you can add noise in
> Matlab later.
>
> Vladimir
>
Thanks Vladimir,
Using our approach works fine with static dipoles with
fixed moments. But simulating many datasets with different setting is
quite timeconsuming since I do want to run several simulations.
Thus the question is still how to simulate a multidipole dataset with fieldtrip,
maybe using a BEM headmodel.
Florian
--
Florian Ph.S Fischmeister eMail: Florian.Fischmeister at univie.ac.at
Brain Research Laboratory University of Vienna
Faculty of Psychology Liebiggasse 5
Tel: +43-(0)1-4277-478-37 A-1010 Vienna, Austria
Fax: +43-(0)1-4277-479-39 AT43:+43-(0)59966-4-47837
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