Print

Print


Possibly - not sure….in general I think we believe that this should not be necessary for ICA component maps.
Cheers.



On 21 Jan 2013, at 10:02, Andreas Bartsch wrote:

> Hi Stebve,
> 
> yeah – thanks. I just wanted to make sure that you were just referring to nonspatial mm of the zstats.
> As a side note, would you see any advantage of spatial mm in this particular case?
> Cheers,
> Andreas
> 
> Von: Stephen Smith <[log in to unmask]>
> Antworten an: FSL - FMRIB's Software Library <[log in to unmask]>
> Datum: Montag, 21. Januar 2013 10:30
> An: <[log in to unmask]>
> Betreff: Re: [FSL] Resting state and accelerated fMRI data acquisition
> 
> Hi Andreas - see the MELODIC manual:
> 
> http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/MELODIC#Using_melodic_for_just_doing_mixture-modelling
> 
> Cheers.
> 
> 
> 
> 
> On 20 Jan 2013, at 21:04, Andreas Bartsch wrote:
> 
>> Hi Steve,
>> 
>> >one good general tool to do this postdoc is mixture-model correction of zstats
>> 
>> how do you actually do that?
>> Cheers,
>> Andreas
>> 
>> Von: Stephen Smith <[log in to unmask]>
>> Antworten an: FSL - FMRIB's Software Library <[log in to unmask]>
>> Datum: Freitag, 18. Januar 2013 15:02
>> An: <[log in to unmask]>
>> Betreff: Re: [FSL] Resting state and accelerated fMRI data acquisition
>> 
>> Hi
>> 
>> On 17 Jan 2013, at 15:54, jamy wrote:
>>> Dear all,
>>> I was wondering if there is any documentation on the analysis of resting state fMRI data with multiple acquisition per TR (accelerated fMR sequences). I feel that this can be important, especially because I want to compare standard single acquisition versus multiple acquisitions sequences. How can I avoid temporal autocorrelation between volumes?
>> 
>> There isn't much published yet - see the Feinberg PLoS ONE paper, and I think probably one or more relevant papers by Xinian Zuo.   Also a very nice recent paper from Hennig's group out recently in NeuroImage.   It is correct that the increased autocorrelation needs dealing with - one good general tool to do this postdoc is mixture-model correction of zstats.  
>> 
>>> I was also wondering if there is a way to add motion parameters in the Melodic ICA analysis, as they can be temporally correlated with the data…
>> 
>> Not sure what you specifically mean.
>> 
>> Cheers, Steve.
>> 
>> 
>> 
>>> Thank you
>>> 
>>> J.
>>> 
>> 
>> 
>> ---------------------------------------------------------------------------
>> 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
>> ---------------------------------------------------------------------------
>> 
>> 
>> 
> 
> 
> ---------------------------------------------------------------------------
> 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
> ---------------------------------------------------------------------------
> 
> 
> 


---------------------------------------------------------------------------
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
---------------------------------------------------------------------------