<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi, Tom,<div><br></div><div>I guess if you do cluster analysis, which is based on permutation tests you do not need any correction like.</div><div>Cluster-based statistics just deal with multiple comparison problem differently (Monte-Carlo randomization, permutation tests and examine the probability of your cluster among the random ones). Clusters may be formed based on time, space/frequency adjacency.</div><div><br></div><div>Best Regards,</div><div>Olga.</div><div><br><div><div>On 27.01.2011, at 2:26, Tom Campbell wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div class="hmmessage" style="font-size: 10pt; font-family: Tahoma; ">Dear Eric Maris, Robert Oostenveld and colleagues,<br> <br>I write with some queries with reference to your previous correspondence on the Fieldtrip listserv and would very much appreciate if you could please answer them.<font size="2" face="Tahoma,sans-serif"><span style="font-size: 10pt; "><br> </span></font><font size="2" face="Tahoma,sans-serif"><span style="font-size: 10pt; "><br>I am trying to use Fieldtrip to analyse timelocked ERP data from what is a 16(participant: [1:16]) X2(Background: congruent, incongruent)x2(Stimulus: Animal, Vehicle) design. The code seems to runing well treating this as a 16(participant: [1:16]) X4(Visual stimulus: animal-congruent background, animal-incongruent background, vehicle-congruent, vehicle-incongruent )design with 4 conditions, though I haven't looked at the results of the tests yet. If I then run cluster analyses of differences of theoretical interest via depsamplest, please how would I bonferroni correct? I am interested in what clusters exist in the background and stimulus main effects and their background X stimulus interaction. Please is this possible in fieldtrip to use depsamplesF to work with a Participant X "2-way" design?</span></font><font size="2" face="Tahoma,sans-serif"><span style="font-size: 10pt; "><br></span></font><br>Best regards,<br> <br>Tom Campbell.<br><br><div> </div><br><br>_______________________________________________<br>fieldtrip mailing list<br><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a></div></blockquote></div><br></div></body></html>