[Eeglablist] statcond
Arnaud Delorme
arno at salk.edu
Mon Oct 1 00:57:17 PDT 2007
Dear Alexander,
> Now I'm wondering if the p-values that
> are returned from this function are already corrected for multiple
> comparisons or not?
No, the p-values are not corrected for multiple comparisons yet. One way
to do it is to use FDR (the webpage below contains a Matlab function).
http://www.sph.umich.edu/~nichols/FDR/
Another elegant (but computationally expensive) way to do it is to
bootstrap the size of the biggest cluster of contiguous significant
values as this is performed in Fieldtrip.
We will have both of these soon in EEGLAB.
Also, we figured out that bootstrap was actually better than
permutations (for reasons pertaining to generalization of hypothesis
from the data sample to the population from which it is drawn). The
latest statcond function will thus allow to use bootstrap.
Best,
Arno
More information about the eeglablist
mailing list