Thanks for your answer. But I am not so sure about what I am doing here, could you please check here. The main idea is to extract ROI average time series from different layer surface. 

what I have done
1 using mris_expand to get intermediate  layer,  such as lh. white_outer0.16GM. 
2 using bbregister to register functional volume to anatomical volume. 
3 using mri_vol2surf to sample the functional data to the intermediate layer. 
mri_vol2surf --mov filtered_func_data.nii.gz --out $SUBJECTS_DIR/lh_0.16.w --out_type paint --srcreg register.dat --hemi lh --projfrac 0 --surf white_outer0.16GM

after get lh_0.16.w, how should I use this file in mri_segstats function! This is a overlay file, not a volume or surface. 


Thanks!



On Oct 5, 2015, at 18:38, Douglas Greve <greve@nmr.mgh.harvard.edu> wrote:

mri_segstats with the label option. Specify --id 1 and use the --avgwf
output option to get the full time course

On 10/5/15 1:34 PM, Yun Wang wrote:
Hi All,

If I use mri_vol2surf to sample the functional volume onto surface, how can I extract the time series  from surface vertices corresponding to certain ROI or Label which were created by freesurfer.

Thanks!

Yun
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer



_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer


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.