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Home > Downloads
Cluster Probability
Usage: cluster_prob clusterSize area t_val -[sld | fwhm] val
For implementation details, see
cluster_prob.
"clusterSize" is the "Min Cnt" of Stimulate's cluster
option 2D4N, (2 Dimensional - 4 Neighbor)
"area" is either the entire image volume:
Width x Height x Planes, or the size of a ROI which is given
in Stimulate's Timecourse Full Plot summary window.
"t_val" is Stimulates's "T-test threshold", not the
Probability Confidence!
"val" is the image
smoothness.
It is recommended that the "fwhm" option be given for use
of the theoretical smoothness value. Then the "val" is the
"Image Space" gaussian FWHM which/is equal to:
0.44 * (N / r_k)
where N is the image width and r_k is the radius of the
K-space Gaussian LPF.
Here is the source code:
cluster_prob.c.
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