Dear experts,
I had a question concerning the output of the Monte Carlo Z-simulation
(abs) in Qdec. When I run the analysis, Qdec prints out a table including
the max vertex, p-values, and coordinates of significant clusters. However,
when I hit the button 'Find clusters go to max', qdec provides
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
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):
# ClusterN
Hi Doug,
I am using FS build centos 4 64 bit 5.1.1 (downloaded Nov 2011) -
presumeably new mris_preproc will not be included in this ? If not is the
version Anderson posted link to earlier in this thread (thank you
Anderson!) good to use ?
And yes I was using "ABS" - however when I select a unidi
On 05/01/2012 09:02 PM, Mahinda Yogarajah wrote:
> Hi Doug,
>
> Thanks for the swift answer to the earlier questions - can I clairfy
> some things:
>
> 1) Am I safe to use (and attempt to interpret) area/volume in a vertex
> wise analysis (as opposed to an ROI based analysis) using the basic
>
Hi Mahinda,
For question 1, if you use the new mris_preproc, as described here:
http://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg19821.html
then yes, you are safe in computing the areas for each vertex.
We have a recent paper that discuss current matters on pointwise area
stuff, a
Hi Doug,
Thanks for the swift answer to the earlier questions - can I clairfy some
things:
1) Am I safe to use (and attempt to interpret) area/volume in a vertex wise
analysis (as opposed to an ROI based analysis) using the basic concept you
describe below - I have read on the forums about proble
On 04/28/2012 09:45 PM, Mahinda Yogarajah wrote:
> Dear Experts,
>
> I had 2 questions with regard to vertex wise analysis using qdec.
>
> 1) How should one interpret the dependent variables area/pial area and
> volume when comparing 2 groups with qdec and a vertex wise (as opposed
> to ROI bas
Dear Experts,
I had 2 questions with regard to vertex wise analysis using qdec.
1) How should one interpret the dependent variables area/pial area and
volume when comparing 2 groups with qdec and a vertex wise (as opposed to
ROI based) analysis - or are they uninterpretable in this context ? I re
