There are several. E.g.:
Mikl et al (2008) MRI 26(4)
de Beeck (2010) NeuroImage
Jo et al (2007) NeuroImage
Skudlarski et al (1999) NeuroImage
Fransson et al (2002) NeuroImage
Hopfinger et al (2000) NeuroImage
White et al (2001) NeuroImage
That should be a good enough start.
________________________________________
From: SPM (Statistical Parametric Mapping) [[log in to unmask]] On Behalf Of Victor Terry [[log in to unmask]]
Sent: Tuesday, November 23, 2010 10:44 AM
To: [log in to unmask]
Subject: Re: [SPM] FWHM size in SPM software
Thanks you all.
Are there any papers which discuss how to determine the kernel size?
or to show the performance versus the kernel size?
Thanks,
Victor
On Tue, Nov 23, 2010 at 5:54 AM, Nicolas Linder <[log in to unmask]<mailto:[log in to unmask]>> wrote:
The smoothing kernel should ideally be 2-3 times the aquisioned voxelsize. So in your case I guess it should be anywhere between 4 and 6.
best,
Nico
-------- Original-Nachricht --------
> Datum: Tue, 23 Nov 2010 04:57:20 -0500
> Von: Victor Terry <[log in to unmask]<mailto:[log in to unmask]>>
> An: [log in to unmask]<mailto:[log in to unmask]>
> Betreff: Re: [SPM] FWHM size in SPM software
> Hi Torben,
>
> Thanks. I have checked the image as guided by you. The voxel size is
> 2mm-2mm-2mm which is same as the actual size.
>
> So, the SPM actually consider 4 voxels as the FWHM?
>
> Thanks,
> Tianhao
>
> On Tue, Nov 23, 2010 at 3:59 AM, Torben Ellegaard Lund
> <[log in to unmask]<mailto:[log in to unmask]>>wrote:
>
> > Dear Victor
> >
> > The FWHM is specified in millimeters. SPM will take your voxelsize into
> > account, if you don't know what your voxelsize is you can determine it
> using
> > Check registration and right click on the image.
> >
> > Best
> > Torben
> >
> >
> > Den 23/11/2010 Uge:47 kl. 02.45 skrev Victor Terry:
> >
> > > Dear SPMers,
> > >
> > > I am using the Gaussian smoothing to preprocess the 3D-MRI images. The
> > FWHM is set as 8mm-8mm-8mm in the interface of the SPM8 software.
> > >
> > > If the size of the voxel in the image is 2mm-2mm-2mm, is the actual
> FWHM
> > 16mm-16mm-16mm?
> > > Does “8mm” in the SPM8 software mean “8 voxels” or not? Is the
> default
> > voxel size 1mm-1mm-1mm or not?
> > >
> > >
> > > Thanks in advance.
> > > Victor
> >
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