Hi Donna,
thank you very much for the prompt feedback!
> Now we distinguish creating, say, average fiducial surfaces from
> creating atlases. One can generate the former without generating the
> latter, which is more involved. It would help if I knew more about what
> you're trying to do.
Sure, my goal is not to create an atlas, but to create a surface
representations from my 20 subject. Let's call this a target.
Most of my fMRI effects are around Heschl gyrus, so I am not completely
satisfied with using an atlas to get a sense of where exactly they are
located. I would also like to include the transverse temporal sulcus in
the registration (and perhaps some additional landmark), and show on the
rendered surface with the projected functionals how variable the
landmarks I choose are.
Right now my plan is to (I analyzed everything in SPM):
1. create a target surface from the SPM-normalized T1s of each of the
participants: this is not a very nice representation, but it shows very
clear landmarks (with the possible exception of the ventral medial wall);
2. project the surfaces of the participants (derived from SPM-normalized
T1s) onto this target surface;
3. create a new improved target surface by averaging those coming out
from 2. (eventually include the additional temporal landmarks at this
point and not at 1.).
4. project the surfaces of the participants used at 2. on the new target;
5. average surfaces coming out at 4;
6. project my functionals (group results) onto the average surface from 5.
Would this sound like a good procedure?
Thank you again!
Bruno
>> Thank you!
>>
>> Bruno
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