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Cluster Probability Program
The program, cluster_prob, is a direct implementation
of the following paper:
Jinhu Xiong, et al.
``Clustered Pixels Analysis for Functional MRI
Activation Studies of the Human Brain''
Human Brain Mapping, 3:287-301(1995).
The program is invoked as follows:
Usage: cluster_prob clusterSize area t_val -[sld | fwhm] val
where the program command-line parameters are related to Xiong's
equations as follows:
Note the clusterSize, K, is the threshold for the
two-dimensional four-neighbor (2D4N) connected compoments.
The parameter, val, is dependent on the switch option and
can be either:
where sld is the Square-root of the Lamda Determinant as
given by Xiong's equation s12 on page 301:
and is the image-space Full Width Half Maximum of
the applied guassian filter. If no filtering is done, a value of
0 for should be used.
The output from the program is the evaluation of Xiong's equation 11
on page 291,
where per equation 2 on page 289:
and per equation 10 on page 291:
and per the last paragraph on page 290:
and per the first paragraph on page 291:
John Paul Strupp
Thu Sep 4 21:09:14 CDT 1997