Re: [Freesurfer] Best way to run GLM on a single subject across multiple sessions?

[Douglas N Greve]

You can do it that way. If you  use the -per-run option, it will motion 
correct and coregister each run separately and only combine them in the 
common space (eg, surface space). The alternative is to analyze each 
separately, then combine the results using a fixed effect model using 
mri_glmfit. The difference, if any, will depend on your design. If you 
do not have any event types that are the same across sessions, then the 
results should be nearly identical.


On 10/03/2016 03:03 PM, Taylor, Johnmark wrote:
> Hello,
>
> I am looking to run a GLM on a single subject, where data was 
> collected across several different sessions. What is the best way to 
> go about doing this in the FSFAST pipeline? I was thinking that I 
> should just 1) drop the data for all the runs into a single BOLD 
> directory as though they were from a single session, and 2) let the 
> registration and motion correction do as well as they can. Is this a 
> reasonable approach, and if so, are there any settings in the 
> preprocessing or GLM that would advisable (for instance, in terms of 
> running the GLM on the surface versus the volume, or doing the 
> registration per-run versus per-session)?
>
> Thank you very much,
>
> JohnMark
>
>
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-- 
Douglas N. Greve, Ph.D.
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[Freesurfer] Best way to run GLM on a single subject across multiple sessions?

[Taylor, Johnmark]

Hello,

I am looking to run a GLM on a single subject, where data was collected
across several different sessions. What is the best way to go about doing
this in the FSFAST pipeline? I was thinking that I should just 1) drop the
data for all the runs into a single BOLD directory as though they were from
a single session, and 2) let the registration and motion correction do as
well as they can. Is this a reasonable approach, and if so, are there any
settings in the preprocessing or GLM that would advisable (for instance, in
terms of running the GLM on the surface versus the volume, or doing the
registration per-run versus per-session)?

Thank you very much,

JohnMark
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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
dispose of the e-mail.