<div dir="ltr"><div><div><div>Involved in source analyses from MEG/EEG data, I am going
through your papers related to statistical testing (Nonparametric stat
testing of coherence differences, 2007 and stat testing in electrophys
studies, 2012). Mostly concerned with coherence and coherency (either
topography or tomography), I have some questions related to
nonparametric statistical testing in the case where we have 2 groups
(one group per condition, N subjects in each group) of individuals (n
trials for each subjects). I will greatly appreciated some information
that could help clarifying the followings:<br>- how do we design the null distribution? permutations are among all subjects? How do we handle fixed/random effects?<br>-
Can we reproduce stricto sensu the Monte-Carlo approach described in
the 2007 publication at the level of subjects (each subject being a UO) ?<br>-
Can we use the stat defined as the difference of the imaginary part of
the coherence ? (averaged over the subjects in a group?)<br><br></div>With my anticipated thanks,<br></div>Best<br><br></div>JM Lina<br></div>