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Dear FreeSurfer Developer,

Hi. Thanks to FreeSurfer, I could perform surface-based activation analysis 
with FSFAST. Now I want to do surface-based functional connectivity analysis. 
For the sake of consistency, I want to use the same nuisance regressors as used 
in FSFAST. Unfortunately I'm stuck in motion correction parameters.

According to 
https://secure-web.cisco.com/10LyHLSQ2Psfux7V-2TqU0TpTUpRE9gROQ8dm_KryluL_QNU55nhxXetOytBet_fQTG2A2PoLAke5cI9GoJ_eOzKwcQtM7JYw9WYkhhQtt4s_DvZSfuBoKyguaDrK0mk0JuETegFDP3ZyvD9qyw4cHTRZQb4vlDoArkNwd9vCCghIRn9t4xKTpeh9V8rLHllL_HSPRV5m0aF_axLuq8MDNrWo5dzq5hejqIK9sN2xGbSggauWRBsUhLpwYiivhVBn7KdQOMfU5Fu6_mxwrCIiNvR4h-Ppkv4hJ0XwVF4Yl9PZKclgLeYyDKzb_0D9qDTnFRh9CGp5eFa_0qD3zHhSSA/https%3A%2F%2Fsurfer.nmr.mgh.harvard.edu%2Ffswiki%2FFsFastTutorialV6.0%2FFsFastPreProc%23MotionCorrection.28MC.29,
 motion correction parameters are stored in mcprextreg. Since there are 6 
columns, I guess they are 3 translations and 3 rotations. On the other hand, 
none of them are in mcAll, X.mat. What are the 18 motion correction parameters 
in X.mat? and which motion correction parameters are used as nuisance 
regressors in FSFAST?

Thanks in advance.

Kind regards,
Andy (Junghyun) Kim
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