help > RE: Differences in SPM vs CONN 2nd level results
Dec 16, 2019  02:12 PM | Nadja
RE: Differences in SPM vs CONN 2nd level results
Dear All,

I have the same problem, that I get different results in CONN, SPM12 and xjView.
In the Appendix is one example of the seed-to-voxel analysis in the Default Mode Network (mPFC) at a
voxel threshold of p< 0.01 (p-uncorrected)
Cluster threshold p< 0.05 (cluster size p-FDR-corrected)
T(16)_min = 2.92  ---   k_(min)= 369

In xjView:
Type: T df: 16
Threshold
-- p value = 0.01
-- intensity = 2.5835
-- cluster size = 369
Number of clusters found: 4

Why do I get a different T-intensity value in xjView as compared to CONN? If I manually Change the T-value to 2.92, which is the same value I get in CONN, my p-value changes to p=0.0050081 and then I get the same clusters as in Conn.

I'd be very grateful if anyone could help and explain this to me. Thanks!
Nadja

Threaded View

TitleAuthorDate
Ines Del Cerro May 3, 2018
RE: Differences in SPM vs CONN 2nd level results
Nadja Dec 16, 2019
Alfonso Nieto-Castanon Dec 16, 2019