Hi,freesurfers:
Recently,I read a paper which used freesurfer to processed their data,this
is the paper's
link:http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.0060159
In this paper,the antor said :
"One of the critical steps of the whole procedure was to partition the
participants' cortex into ROIs located in an identical topographic position for
each participant despite interindividual anatomical variation. We used
Freesurfer to register a labeled mesh from an average brain onto the brain of
each individual participant, where each label corresponded to one of 66
anatomical cortical regions . This output provided for every participant a
standardized partition of the cortex into 66 regional areas. In a second step,
each of these regional areas were subdivided on the Freesurfer average brain
into a set of small and compact regions of about 1.5 cm2, resulting in 998 ROIs
covering the entire cortex. This subdivision was then registered on the
individual brain using the same transformation as for the 66 regional areas
thus maintaining the topological constraints of mapping. Consequently, the
resulting partitions of the cortex into 66 and 998 ROIs were in anatomically
closely matched positions for all participants "
So,I wander how can we subdivided the 66 ROIs into 998 ROIs?
Thanks,
wang
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