关于height extent校正

Submitted by liufeng on Tue, 12/13/2011 - 21:05

Significant clusters
of activation were determined using the joint expected probabil-
ity distribution with height (p < .001) and
extent (p < .001) thresholds, corrected at the whole-brain level.

我们的extent不是体素个数吗？extent (p < .001)是什么意思呢？height (p < .001) 是每个体素的p值吧

Submitted by YAN Chao-Gan on Wed, 12/14/2011 - 05:27

确认一下文章中是不是SPM的FWE或FSL的cluster校正。可以阅读一下这方面相关的参考资料。它们会给出团块水平的p值，extent应该是这个。