[FieldTrip] baseline_normalization

[Ivan Chakalov]

Thank you, it is a very good idea!
Best,
Ivan

On 12 November 2012 16:17, Gio Piantoni <g.piantoni at nin.knaw.nl> wrote:

> Hi Ivan,
>
> If you multiply the values by 100, you get the "percentage change",
> which is very straightforward to interpret.
>
> Cheers,
> G
>
> On Mon, Nov 12, 2012 at 11:24 AM, Eelke Spaak <eelke.spaak at donders.ru.nl>
> wrote:
> > Dear Ivan,
> >
> > Yes, you are correct. I think "relative change of spectral power"
> > covers what the formula means quite well.
> >
> > Best,
> > Eelke
> >
> > On 12 November 2012 11:16, Ivan Chakalov <chakalov.ivan at googlemail.com>
> wrote:
> >> Dear Fieldtrippers,
> >>
> >> I have question regarding the baseline normalization using Time
> Frequency
> >> Analyses on a sensor space-level. I have used “Hanning tapper “for
> analyzing
> >> MEG data with “relchange” (relative change) baseline-normalization. So
> far I
> >> have no idea how to report the obtained results in terms of units or
> >> dimensions?  Should it be called “relative change of the spectral
> power”? As
> >> I understood, if Pa is the spectral power of the post-rigger
> time-period and
> >> Pb is the spectral power of the pre-trigger period, the “relchange”
> value is
> >> calculated as: Pa-Pb/Pb
> >>
> >> Am I correct?
> >>
> >>
> >>
> >> Thank you in advanced!
> >>
> >> Ivan Chakalov
> >>
> >>
> >> _______________________________________________
> >> fieldtrip mailing list
> >> fieldtrip at donders.ru.nl
> >> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
> >
> > _______________________________________________
> > fieldtrip mailing list
> > fieldtrip at donders.ru.nl
> > http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>
> _______________________________________________
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20121112/716bb0d5/attachment-0002.html>