Dear FreeSurfers,
I didn't notice a resolution to this thread. I'm experiencing the same 'problem';
When I run Qdec and perform a Monte Carlo correction of 1.3, the terminal window output gives me the following clusters and values (during the MC correction I used the 'abs' option):
# ClusterNo Max VtxMax Size(mm^2) TalX TalY TalZ CWP CWPLow CWPHi NVtxs Annot 1 -4.665 132680 2413.29 -41.5 2.8 24.3 0.00010 0.00000 0.00020 4785 precentral 2 -3.915 4012 1620.38 -30.7 -26.1 61.8 0.00010 0.00000 0.00020 3811 postcentral 3 -3.257 53060 1559.53 -51.7 -0.2 -23.9 0.00010 0.00000 0.00020 2447 middletemporal 4 -2.846 100336 1266.09 -17.0 30.2 44.1 0.00240 0.00180 0.00300 2203 superiorfrontal 5 -2.676 4834 855.91 -19.3 30.5 -14.5 0.03440 0.03210 0.03670 1194 lateralorbitofrontal
But when (after performing MC correction) I hit the button 'Find Clusters and Goto Max' I get different (less) clusters and different Max and coordinate values:
============================================================ Generating cluster stats using min threshold of 2... Found 4 clusters Contrast: 'lh-Avg-thickness-sumD_adh_5_add1_SQRT-Cor', 10fwhm, DOF: 360 ClusterNo Max VtxMax Size(mm2) TalX TalY TalZ NVtxs Annotation --------- --- ------ --------- ---- ---- ---- ----- ---------- 1 -4.0000 0 2413.29 -36.8 -18.3 64.5 4785 precentral 2 -4.0000 17 1620.38 -21.0 -34.8 68.6 3811 postcentral 3 -4.0000 39 1559.53 -53.5 -20.2 -25.5 2447 middletemporal 4 -2.6198 21 1266.09 -6.6 33.8 49.8 2203 superiorfrontal ============================================================
Could you please explain this difference in output and why the Max and coordinate values differ?
Thank you very much for your help!
Best, Sabine Mous
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Sabine Mous, MSc Department of Child & Adolescent Psychiatry/Psychology PhD student, Generation R Study
Erasmus MC, room AE-005 P.O.Box 2040 3000 CA Rotterdam The Netherlands Phone: (+31) 10 7038019 E-mail: s.mous@erasmusmc.nl http://www.erasmusmc.nl/kinderenjeugdpsychiatrie http://www.generationr.nl/