Hi
After mixture modelling the numbers in the melodic_IC file are pseudo-Z-statistics, i.e. refer to how many standard deviations away from the background noise Gaussian a given voxel component value is
Hth
Christian
> On 21. Mar 2018, at 04:44, Thomas, Sarah <[log in to unmask]> wrote:
>
> Hello,
>
> I am putting together figures for a manuscript and had a question about how to interpret the unit of the intensity values for the melodic_IC file, which I assume (but could be wrong) are also related to the numbers entered in the min/max brightness value boxes.
>
> On your tutorial page when showing command language to open the melodic_IC file with the dual regression result, you say "
> fsleyes -std groupICA15/melodic_IC \
> -un -cm red-yellow -nc blue-lightblue -dr 4 15 \ etc
> "
>
> Does the 4 and 15 refer to z-score ranges? I'm not sure what unit these numbers are in for the melodic_IC file. Is this the conventional setting for this file for display purposes--between 4-15? A lot of published articles do not list this in their figure caption so it's difficult to infer, but I have also seen elsewhere the range 3-12.
>
> I have looked around for the answer and haven't found it, and just want to make sure I am generating figures accurately. I understand for the dual regression/randomise result to show between .95 to 1. Thank you!
>
> Sarah
>
>
>
> Sarah A. Thomas, Ph.D.
> Postdoctoral Research Fellow
> Dept. of Psychiatry and Human Behavior
> Alpert Medical School of Brown University
>
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