Hi
Yes, the description of the method is very inclusive. Only issue I
have is that I'd advice using the Eigen-timeseries rather than the
mean timeseries within the ROIs for further analysis
hth
Christian
On 13 Aug 2009, at 04:02, Xue, Feng wrote:
> Here is an good example for ROI time series data correlation in RS-
> fMRI:
>
> "Mapping the functional connectivity of anterior cingulate cortex"
> by Daniel S. Marguliesa, A.M. Clare Kellya, Lucina Q. Uddina, Bharat
> B. Biswalb, F. Xavier Castellanosa, c, , and Michael P. Milham
> NeuroImage
> Volume 37, Issue 2, 15 August 2007, Pages 579-588
>
> On Thu, Aug 13, 2009 at 12:19 AM, Tal Herbsman<[log in to unmask]>
> wrote:
>> Dear FSL users, I would appreciate some advice on this: I am
>> interested in doing
>> correlation analysis on time series data extracted w/ fslmeants of
>> various anatomical
>> ROIs from FEAT preprocessed fMRI data. I have a set of nuisance
>> time series (CSF, WM
>> and whole brain global drifts). What would be the correct way of
>> regressing these
>> nuisance covariates out of my time series? I can think of two ways
>> but am not sure which
>> (if any) is correct, nor how to implement them:
>>
>> 1. orthogonalize the ROI time series with respect to global drift
>> time series. Is the FSL
>> orthogonalization available as a separate command line program?
>>
>> 2. use GLM to figure out PEs for nuisance regressors and subtract
>> from signal. Not sure
>> how to go about doing this.
>>
>> Any ideas?
>>
>> Tal.
>>
>>
>> Tal Herbsman, MD
>>
>> Assistant Professor
>> Department of Psychiatry
>> University of Wisconsin School of Medicine and Public Health
>> 6001 Research Park Blvd.
>> Madison, WI 53719-1176
>>
>> Office: (608) 263-6100
>> Fax: (608) 263-0265
>> [log in to unmask]
>>
>>
>
>
>
> --
> Best Regards
>
>
> National Key Laboratory of Cognitive Neuroscience and Learning
> Beijing Normal University
> Beijing, China. 100875
> Tel: +86-13810154455
> web: http://psychbrain.bnu.edu.cn
> ==============================================
> Welcome to MuDuo JinSheng BBS @ Beijing Normal University
> telnet://bbs.mdjs.org
> http://bbs.mdjs.org
_______________________________________________
Christian F. Beckmann, DPhil
Senior Lecturer, Clinical Neuroscience Department
Division of Neuroscience and Mental Health
Imperial College London, Hammersmith Campus
Rm 419, Burlington Danes Bldg, Du Cane Road, London W12 0NN, UK
Tel.: +44 (0)20 7594 6685 --- Fax: +44 (0)20 7594 6548
Email: [log in to unmask]
http://www.imperial.ac.uk/medicine/people/c.beckmann/
Senior Research Fellow, FMRIB Centre
University of Oxford
JR Hospital - Oxford OX3 9DU
Tel.: +44 (0)1865 222551 --- Fax: +44 (0)1865 222717
Email: [log in to unmask]
http://www.fmrib.ox.ac.uk/~beckmann
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