Hi,
I think Stefano uses the voxelwise counts of probtrackx streamlines that
make it to specific targets from predefined seeds in standard space which
should be aligned.
So even though there may be other issues to consider, alignement should
not be the major one.
Cheers,
Andreas
Am 17.02.14 16:44 schrieb "Anderson M. Winkler" unter
<[log in to unmask]>:
>Hi Stefano,
>
>I don't think it's wise to use randomise in the outputs of probtrackx,
>because the tracts aren't aligned to each other. If you'd like to
>compare the measurements from these tracts, perhaps you could use them
>as masks to extract some other measurement, e.g., FA, etc. You'd have
>then a single measurement per subject, which you could analyse in any
>statistical package.
>
>All the best,
>
>Anderson
>
>
>Am 17.02.14 11:42, schrieb Stefano:
>> Hi again,
>>
>> I'm thinking to use fslmerge to concatenated the output of probtrackx
>>(e.g. seed_to_frontal.nii.gz) of each subject.
>>
>> fslmerge -t $SUBJ01/seed_to_frontal.nii.gz
>>$SUBJ02/seed_to_frontal.nii.gz ... 4D_final_output
>>
>> Thus, randomise could be performed for within and between groups
>>comparisons.
>>
>> What do you think about it?
>>
>> Please, give me a feedback.
>>
>> Thanks in advance and best regards,
>>
>>
>> Stefano
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