Hello, I would like to know were can I find some information or paper
about how FSL manages to solve the fiber crossing problem.
Thank you very much,
On Saturday, May 7, 2011, Stephen Smith <[log in to unmask]> wrote:
> Hi - was the data (estimated to be) unusually smooth? Have a look in the "smoothest" output in the FEAT/stats directory……
> You might find the easiest thing to look into this further is to try feeding in an unthrehsolded zstat map into easythresh and see what it thinks it's doing.
> Cheers
>
>
>
> On 6 May 2011, at 14:24, David C wrote:
> Hi FSL Experts,
>
> I'm getting an empty, thresholded group map for a contrast that should easily be lighting up certain parts of the brain (i.e., viewing attractive>unattractive faces). Even when I lower the z-threshold in FSLView to 1, nothing pops up. I used the default, cluster-thresholding values in FEAT, so there is nothing excessively stringent occurring in my model.
>
> When I looked at the unthresholded activation, there are sizable blobs showing up well past the z threshhold of 3.0 but none of them make it past cluster thresholding.
>
> I am getting the feeling that I did something wrong, could any of you suggest why I could have such robust activation in my unthresholded maps, but that none if it would survive thresholding?
>
> Thanks,
> Dave
>
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>
>
> ---------------------------------------------------------------------------
> Stephen M. Smith, Professor of Biomedical Engineering
> Associate Director, Oxford University FMRIB Centre
>
> FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
> +44 (0) 1865 222726 (fax 222717)
> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve
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