Re: [Freesurfer] How to find the difference between to different fMRI datasets?

2016-03-07 Thread Douglas N Greve


On 03/04/2016 06:01 AM, Silas wrote:
> Thanks Douglas!
>
> 1 - I have two functional files per subject (.mgh). Is it possible to insert 
> two files per subject in mris_preproc? In my former functional analysis I 
> haven't concatenated my data using a FSGD-file when running mris_preproc.
Are these volumes or surfaces? If volumes, get a registration matrix 
using bbregister, then run mri_vol2surf specifying fsaverage as the 
target subject. If a surface, then use mri_surf2surf.
>
> 2 - Can you calculate the difference between two functional data sets (on the 
> fsaverage) before starting the group analysis stream? E.g. by subtracting the 
> files?
Yes, fscalc file1.mgh sub file2.mgh -o diff.mgh
>
> Best, Silas
>
> 
> From: freesurfer-boun...@nmr.mgh.harvard.edu 
>  on behalf of Douglas N Greve 
> 
> Sent: Thursday, March 3, 2016 6:19 PM
> To: freesurfer@nmr.mgh.harvard.edu
> Subject: Re: [Freesurfer] How to find the difference between to different 
> fMRI datasets?
>
> Create a contrast between the two conditions
>
> On 03/01/2016 01:27 AM, Silas wrote:
>> Dear FreeSurfer team,
>>
>>
>> Thank you for all your help so far!
>>
>>
>> I would like to visualize the difference between two fMRI data sets.
>>
>> Data set1: Cortical activation during movement of a finger.
>>
>> Data set2: Cortical activation during movement of a finger different
>> from the first finger.
>>
>>
>> How can i perform this operation?
>>
>>
>> Best, Silas
>>
>>
>>
>> ___
>> Freesurfer mailing list
>> Freesurfer@nmr.mgh.harvard.edu
>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
> --
> Douglas N. Greve, Ph.D.
> MGH-NMR Center
> gr...@nmr.mgh.harvard.edu
> Phone Number: 617-724-2358
> Fax: 617-726-7422
>
> Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
> FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
> www.nmr.mgh.harvard.edu/facility/filedrop/index.html
> Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
>
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>
>
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> at
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>
>

-- 
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422

Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
www.nmr.mgh.harvard.edu/facility/filedrop/index.html
Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/

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Re: [Freesurfer] How to find the difference between to different fMRI datasets?

2016-03-04 Thread Silas
Thanks Douglas!

1 - I have two functional files per subject (.mgh). Is it possible to insert 
two files per subject in mris_preproc? In my former functional analysis I 
haven't concatenated my data using a FSGD-file when running mris_preproc. 

2 - Can you calculate the difference between two functional data sets (on the 
fsaverage) before starting the group analysis stream? E.g. by subtracting the 
files?

Best, Silas 


From: freesurfer-boun...@nmr.mgh.harvard.edu 
 on behalf of Douglas N Greve 

Sent: Thursday, March 3, 2016 6:19 PM
To: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] How to find the difference between to different fMRI 
datasets?

Create a contrast between the two conditions

On 03/01/2016 01:27 AM, Silas wrote:
>
> Dear FreeSurfer team,
>
>
> Thank you for all your help so far!
>
>
> I would like to visualize the difference between two fMRI data sets.
>
> Data set1: Cortical activation during movement of a finger.
>
> Data set2: Cortical activation during movement of a finger different
> from the first finger.
>
>
> How can i perform this operation?
>
>
> Best, Silas
>
>
>
> ___
> Freesurfer mailing list
> Freesurfer@nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

--
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422

Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
www.nmr.mgh.harvard.edu/facility/filedrop/index.html
Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/

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Re: [Freesurfer] How to find the difference between to different fMRI datasets?

2016-03-03 Thread Douglas N Greve
Create a contrast between the two conditions

On 03/01/2016 01:27 AM, Silas wrote:
>
> Dear FreeSurfer team,
>
>
> Thank you for all your help so far!
>
>
> I would like to visualize the difference between two fMRI data sets.
>
> Data set1: Cortical activation during movement of a finger.
>
> Data set2: Cortical activation during movement of a finger different 
> from the first finger.
>
>
> How can i perform this operation?
>
>
> Best, Silas
>
>
>
> ___
> Freesurfer mailing list
> Freesurfer@nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

-- 
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422

Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
www.nmr.mgh.harvard.edu/facility/filedrop/index.html
Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/

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[Freesurfer] How to find the difference between to different fMRI datasets?

2016-02-29 Thread Silas
Dear FreeSurfer team,


Thank you for all your help so far!


I would like to visualize the difference between two fMRI data sets.

Data set1: Cortical activation during movement of a finger.

Data set2: Cortical activation during movement of a finger different from the 
first finger.


How can i perform this operation?


Best, Silas
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The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
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