[FieldTrip] A question

Eelke Spaak eelke.spaak at donders.ru.nl
Thu Feb 16 09:28:43 CET 2012

Dear Sheida,

You probably need to provide a bit more information before anyone is
able to help you. In general, if you perform ICA, you get out
component timecourses and mixing/unmixing matrices. If you keep all
your components, and multiply them with the mixing matrix, you should
get all your original channel timecourses out again. So: if you don't
change the data, the data will not be changed :)


On 15 February 2012 21:19, Shayda Malekpour <shayda.malekpour at gmail.com> wrote:
> Dear All,
> I am using fieldtrip on MEG data set.
> I want to know if I do not remove any ICA component,  will the data be  the
> same as the original data, or is there is a filter somewhere in the software
> that changes the data? If so how much does it change it (What is their
> relative difference?)
> Thanks,
> Sheida
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