Hi Cyril,
thanks for the advertising :) To follow up on that, you can download the
script after a brief registration at
www.medizin.uni-tuebingen.de/kinder/en/research/neuroimaging/software/
Cheers,
Marko
Dr Cyril Pernet wrote:
> Yes many people done that, including myself - in Gorgolewski et al
> Neuroimage 69 (2013) we used mean displacement which combines all 6
> parameters. This is easy to compute but even better you can use a script
> already available to do that ... Details can be found in Wilke
> Neuroimage 59 (2012)
>
> Cyril
>
> Sent from my mobile phone
>
> Dr Cyril Pernet
> Brain Research Imaging Centre
> www.sbirc.ed.ac.uk/cyril/
>
>
> ----- Reply message -----
> From: "MCLAREN, Donald" <[log in to unmask]>
> To: <[log in to unmask]>
> Subject: [SPM] Single motion value from realignment params
> Date: Tue, Jul 2, 2013 02:25
>
>
> This has been done before.
>
> See Power et al. 2012
> Neuroimage. <http://www.ncbi.nlm.nih.gov/pubmed/22019881#> 2012 Feb
> 1;59(3):2142-54. doi: 10.1016/j.neuroimage.2011.10.018. Epub 2011 Oct 14.
>
>
> Spurious but systematic correlations in functional connectivity MRI
> networks arise from subject motion.
>
> Power JD
> <http://www.ncbi.nlm.nih.gov/pubmed?term=Power%20JD%5BAuthor%5D&cauthor=true&cauthor_uid=22019881>,
> Barnes KA
> <http://www.ncbi.nlm.nih.gov/pubmed?term=Barnes%20KA%5BAuthor%5D&cauthor=true&cauthor_uid=22019881>,
> Snyder AZ
> <http://www.ncbi.nlm.nih.gov/pubmed?term=Snyder%20AZ%5BAuthor%5D&cauthor=true&cauthor_uid=22019881>,
> Schlaggar BL
> <http://www.ncbi.nlm.nih.gov/pubmed?term=Schlaggar%20BL%5BAuthor%5D&cauthor=true&cauthor_uid=22019881>,
> Petersen SE
> <http://www.ncbi.nlm.nih.gov/pubmed?term=Petersen%20SE%5BAuthor%5D&cauthor=true&cauthor_uid=22019881>.
>
> In our lab we use the following metrics:
>
> mean TR-to-TR motion, mean rotation, absolute maximum displacement,
> number of points where TR-to-TR motion exceeds a threshold
>
> Best Regards, Donald McLaren
> =================
> D.G. McLaren, Ph.D.
> Research Fellow, Department of Neurology, Massachusetts General Hospital and
> Harvard Medical School
> Postdoctoral Research Fellow, GRECC, Bedford VA
> Website: http://www.martinos.org/~mclaren
> Office: (773) 406-2464
> =====================
> This e-mail contains CONFIDENTIAL INFORMATION which may contain PROTECTED
> HEALTHCARE INFORMATION and may also be LEGALLY PRIVILEGED and which is
> intended only for the use of the individual or entity named above. If the
> reader of the e-mail is not the intended recipient or the employee or agent
> responsible for delivering it to the intended recipient, you are hereby
> notified that you are in possession of confidential and privileged
> information. Any unauthorized use, disclosure, copying or the taking of any
> action in reliance on the contents of this information is strictly
> prohibited and may be unlawful. If you have received this e-mail
> unintentionally, please immediately notify the sender via telephone at (773)
> 406-2464 or email.
>
>
> On Mon, Jul 1, 2013 at 6:59 PM, Dorian P. <[log in to unmask]
> <mailto:[log in to unmask]>> wrote:
>
> Dear SPM list,
>
> I want to evaluate the hypothesis that two groups did not differ in
> movement inside the scanner. For this, I want to compute a single
> value for each subject from the 6 columns of the realignment
> parameters. Do you have any suggestion on how to do this? For
> example, as a range between min/max values, or general variance
> between values, or focus on sudden shifts? Has anybody done this before?
>
> Thank you.
>
> Dorian
> TJU
>
>
>
>
> The University of Edinburgh is a charitable body, registered in
> Scotland, with registration number SC005336.
>
--
____________________________________________________
PD Dr. med. Marko Wilke
Facharzt für Kinder- und Jugendmedizin
Leiter, Experimentelle Pädiatrische Neurobildgebung
Universitäts-Kinderklinik
Abt. III (Neuropädiatrie)
Marko Wilke, MD, PhD
Pediatrician
Head, Experimental Pediatric Neuroimaging
University Children's Hospital
Dept. III (Pediatric Neurology)
Hoppe-Seyler-Str. 1
D - 72076 Tübingen, Germany
Tel. +49 7071 29-83416
Fax +49 7071 29-5473
[log in to unmask]
http://www.medizin.uni-tuebingen.de/kinder/epn/
____________________________________________________
|