[Freesurfer] Cortical thickness asymmetries ?

2013-02-28 Thread Sophie Maingault
Dear experts,

 

I would like to study cortical thickness asymmetries. According to old
messages it seems impossible so I would like to know if it is always the
case or not ? Maybe, there is a command to subtract the values for each
vertex in the left hemisphere minus the values for each vertex in the right
hemisphere and then use this new variable in qdec ?

 

Thank you for your answer !

 

Sophie 

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Re: [Freesurfer] Cortical thickness asymmetries ?

2013-02-28 Thread Douglas N Greve
Hi Sophie, check out this wiki page
http://surfer.nmr.mgh.harvard.edu/fswiki/Xhemi
doug

On 02/28/2013 10:18 AM, Sophie Maingault wrote:

 Dear experts,

 I would like to study cortical thickness asymmetries. According to old 
 messages it seems impossible so I would like to know if it is always 
 the case or not ? Maybe, there is a command to subtract the values for 
 each vertex in the left hemisphere minus the values for each vertex in 
 the right hemisphere and then use this new variable in qdec ?

 Thank you for your answer !

 Sophie



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[Freesurfer] cortical thickness asymmetries

2011-10-27 Thread Irene Altarelli
Dear Freesurfer experts,

have cortical thickness asymmetries ever been looked at using Destrieux
parcellation scheme, either in adults or (even better) in children? 

Thanks!
Irene


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Laboratoire de Sciences Cognitives et Psycholinguistique 
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75230 Paris Cedex 05
tel. +33 (0)1 44 32 26 23


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Re: [Freesurfer] cortical thickness asymmetries

2011-10-27 Thread Bruce Fischl
not that I know of

Bruce
On Thu, 27 Oct 2011, Irene Altarelli wrote:

 Dear Freesurfer experts,

 have cortical thickness asymmetries ever been looked at using Destrieux
 parcellation scheme, either in adults or (even better) in children?

 Thanks!
 Irene



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Re: [Freesurfer] cortical thickness asymmetries

2011-10-27 Thread Pedro Paulo de Magalhães Oliveira Junior
We have mentioned this in:
Use of SVM Methods with Surface-Based Cortical and Volumetric Subcortical
Measurements to Detect Alzheimer's Disease

You can find the PDF in the FreeSurfer page:
http://surfer.nmr.mgh.harvard.edu/ftp/articles/Oliveira_JAD2010.pdf

I don't have a good explanation though.
-
Pedro Paulo de Magalhães Oliveira Junior
Netfilter  SpeedComm Telecom
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-- For mobile: http://itunes.apple.com/br/artist/netfilter/id365306441




On Thu, Oct 27, 2011 at 10:03, Bruce Fischl fis...@nmr.mgh.harvard.eduwrote:

 not that I know of

 Bruce
 On Thu, 27 Oct 2011, Irene Altarelli wrote:

  Dear Freesurfer experts,
 
  have cortical thickness asymmetries ever been looked at using Destrieux
  parcellation scheme, either in adults or (even better) in children?
 
  Thanks!
  Irene
 
 
 
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 e-mail
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