I converted fMRI results derived from freesurfer to caret, and not I want to
count activation areas on caret. So there is a problem of threshold and scale.
Auto scale range is 0~60. I found that the area size was different when using
scale 1.3~4 from when using scale 1.3~60. And the latter one was smaller.
However , in the latter case(1.3~60), the value of a point that was next to
the border of activation area but in non-activation area was a little bit lager
than the threshold 1.3.
How to set the scale to guarantee the activation accurate?
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