[FieldTrip] (no subject)
max-philipp.stenner at med.ovgu.de
Wed May 14 16:25:44 CEST 2014
I was planning to use cluster-based permutation statistics for group-level inference on the difference between two conditions (depsamplesT) for a fairly small number of subjects (as few as 5). However, this would mean a total of only 2^5=32 possible permutations (=discrete values for the non-parametric null distribution), and therefore a maximum "p-value-resolution" of only 1/32=.0313. Does this mean that group-level permutation statistics are not appropriate for small sample sizes? How do people correct for MC in these cases (using fieldtrip)? (I am specifically interested in group-level analyses, not primarily in within-subject/across-trials testing).
Thanks in advance,
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