Hi,
Just an FYI that there are several atlas-based templates for DMN
discussed in the paper below.
Hum Brain Mapp. 2009 Jul;30(7):2293-303. Interrater and intermethod
reliability of default mode network selection. Franco AR, Pritchard A,
Calhoun VD, Mayer AR.
VDC
> -----Original Message-----
> From: FSL - FMRIB's Software Library
> [mailto:[log in to unmask]] On Behalf Of Steve Smith
> Sent: Tuesday, September 15, 2009 2:19 AM
> To: [log in to unmask]
> Subject: Re: [FSL] another question about MELODIC
>
> Hi,
>
> On 14 Sep 2009, at 14:12, cliff wrote:
>
> > hi,
> > after i finished MELODIC analysi, how can i identify the default
> > mode network(i just analyze a group of resting state data) from
> > those compoents?
>
> I assume you used MELODIC in 'concat' multi-subject mode?
>
> > if there any method in MELODIC to mask or sort the components
> > spatially / temporallly? just as the GIFT(Group ICA of FMRI
> toolbox,
> > vince calhoun).
>
> The components are sorted according to % variance explained,
> which is
> often not very informative. If you want to identify the
> default mode
> network - hopefully if your dimensionality was not too high,
> it should
> be pretty obvious from the group-ICA spatial maps - otherwise you
> could look at certain classic ACC/PCC seed points to see which
> components are highest in those areas. The most robust automated
> thing to do would be 'template matching' or correlation
> against a pre-
> defined DMN map - though I'm not aware of a
> publicly-available one of
> those currently (we'll be releasing this kind of thing at some point
> soonish as one of the atlases provided with FSL).
>
> Cheers.
>
>
>
> >
> >
> > --
> > Best regards!
> >
> > Sen-Hua Zhu
> > Department of Psychology
> > Sun Yat-sen University
> > 135 Xingang West Road, Haizhu District, Guangzhou (510275),
> P.R.China
> > 朱森华
> > 中山大学心理学系
> > 广东省广州市海珠区新港西路135号(510275)
> >
>
>
> --------------------------------------------------------------
> -------------
> Stephen M. Smith, Professor of Biomedical Engineering
> Associate Director, Oxford University FMRIB Centre
>
> FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
> +44 (0) 1865 222726 (fax 222717)
> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve
> --------------------------------------------------------------
> -------------
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