Table 1.

Parameters tested for the different fMRI software packages, giving a total of 192 (3 × 2 × 2 × 4 × 2 × 2) parameter combinations and three thresholding approaches

ParameterValues used
fMRI dataBeijing (198 subjects), Cambridge (198 subjects), Oulu (103 subjects)
Block activity paradigmsB1 (10-s on off), B2 (30-s on off)
Event activity paradigmsE1 (2-s activation, 6-s rest), E2 (1- to 4-s activation, 3- to 6-s rest, randomized)
Smoothing4-, 6-, 8-, 10-mm FWHM
Analysis typeOne-sample t test (group activation), two-sample t test (group difference)
No. of subjects20, 40
Inference levelVoxel, cluster
CDTP = 0.01 (z = 2.3), P = 0.001 (z = 3.1)
  • One thousand group analyses were performed for each parameter combination.