Dear Will,
Something like the following should do it.
Statistical parametric maps were initially thresholded with an uncorrected voxel threshold of p = .oo1. To account for multiple testing only clusters surpassing a corrected cluster threshold of .o5 FWE-R based on Gaussian Random Field Theory / a topological FDR of .05 were considered as significant.
For FWE cite Friston, Worsley, Frackowik, et al. (1994, Hum Brain Mapp - there might be other papers) for FDR cite Chumbley & Friston (2009, Neuroimage).
Best
Helmut
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