Hi Cathy,
What you have suggested sounds right to me.
Thresh should be the sub-brik that contains the statistical measure, t- r- F-. Func should be the sub-brik that contains the associatied coefficient (coef, diff, contrast, R^2, etc). Then the slider will correspond to the t-statistic and the coloring of the voxels will be based on the associated coefficient.
If this is still difficult to understand, you could start by assigning the Thresh and Func both to the statistical measure. Then the slider and voxel coloring are both based on the statistical measure.
Remember, you only see what the slider lets you see. If the slider lets you see a voxel, the color bar determines its color.
hope this helps,
-jim
