On 14 Jun 2018, at 15:11, Ainara Gómez <[log in to unmask]> wrote:

Dear FSL experts,

We have run some correlation analyses using randomise in order to study the relationship between whole brain mean FA and a cognitive measure in a sample of 14 patients.

Once we open the  “_tfce_corrp_tstat1” file, we observe a Max value of 0.48 (image 1 attached), however, when we set the display range to Min: 0.95 and Max: 1 (which corresponds to thresholding the results at p<0.05), we obtain different brain areas of significant results (image 2 attached). Is it correct to obtain a value such as 0.48 the first time that we open the image and still obtain significant results at 0.95 when we change the threshold? We have also checked the max intensity of the image by means of fslstats command and the output is 0.9902.

To our understanding, the Max value that appears the first time you open the “_tfce_corrp_tstat1” is usually highly related to the significance level of the results (if you see a 0.95 there, it is usually indicating that you will have significant results above 0.95) but that is not the case in our results. Is that correct?

Thank you very much,



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