The difference is that the columns are different. The "Max" in the first table refers to the maximum statistic found in the ROI. The "Max" in the 2nd table is not actually a maximum. It is just the -log10(p) of the cluster. This corresponds to the CWP value in the first table (eg, cluster 4 has a CWP=.0024, -log10(.0024)=2.6198 (the negative sign comes from the sign of the contrast max in the cluster)). So the first 4 rows are the same in the two tables. The last row is excluded from the 2nd table because the clusterwise p-value is .0344 which is larger than the clusterwise threshold of .01 doug
On 11/20/2012 05:36 AM, S.E. Mous wrote: > > 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 > > -- > > 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.m...@erasmusmc.nl > > http://www.erasmusmc.nl/kinderenjeugdpsychiatrie > > http://www.generationr.nl/ > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
