In FSL all first level analysis is done in the "functional space" -
at the resolution of the functional images. Registration is also run,
the images are not resampled into the "highres space" (of the structural
scans) or to standard space at this stage. This resampling is done at
the beginning of the higher level analysis. If you want to see your
first level images in a different space then you need to use the
Renderhighres_gui just as you have done. So you have done things
I hope this answers your question.
All the best,
On 18 Jun 2010, at 01:15, Amy Zheng wrote:
> Hi all,
> I'm fairly new to FSL, and I've been struggling with some problems.
> I just ran a first level full analysis on a single subject (with a 3
> step registration). I'm trying to overlay my thresh_zstat maps onto
> my structural images, but I keep getting the dimensional
> incompatibility error. Thresh_zstat would overlay on top of my
> example_func image because they have the same dimensions, but I
> thought the registration would transform those zstats to the
> standard image dimensions?
> However, when I used Renderedhighres_gui and used the structural
> image as my background, it produced a folder called HR and in it, I
> was able to overlay the functional over the transformed structural.
> Can anyone explain why the dimensions are still incompatible after
> the registration? Or could I be using the wrong stats map?
> But...I've tried with all of them in the output feat directory...