Dear Freesufer experts,
I may understand some of the .nii.gz files. angle.nii.gz represents the
phase of the stimulus and angle.masked.nii.gz was masked by significant
map, right? So, angle.nii.gz should be the basis for the delineation,right?
Any advice for the delineation would be very appreciated!
Mingxia zhang
On Wed, May 20, 2015 at 6:15 PM, zhang mingxia zhangmingxia1...@gmail.com
wrote:
Dear Freesurfer experts,
I did the retinotopic mapping analysis followed by
https://surfer.nmr.mgh.harvard.edu/fswiki/FsFastIndividualRetinotopyAnalysis
and view the results by rtview recommended by you. e.g., for subject s03:
rtview --s s03 --rh --polar --real polar/real.nii.gz --imag
polar/imag.nii.gz --fsig polar/fsig.nii.gz.
rtview seems showing a correct picture with red, blue and green color as
other people showed on literature and internet.
However, I didn't find a detailed manual for the delineation of the
Retinotopic Visual Areas. Hope you guys would answer my basic questions:
1. What's map the delineation based on? In previous email, Doug told me
to delineat the boarder of visual area by field sign. However, the value
show on the rtview (on the right of map-real-lh.w ) is different from the
value of fsig.nii.gz (I loaded it as the overlay and saw two different
values in rtview). So, I really wonder what the value of fsig.nii.gz and
map-real-lh.w represent? Does one of them represent the degree of the wedge
from horizontal which I expected to be the basis of my delineation?
2. Should the delineation be based on the specific value or just the
boarder of the color? For example, I firstly want to define V1, How? Do I
need to define it based on the specific value showed on rtview? or V1 is
always defined on experience of calcarine sulcus and then the boarder of V1
and V2 is defined based on the color change)?
Thanks for your always support!
Mingxia Zhang
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