I was wondering if someone could help me answer a relatively simple question:
 
I set up a paradigm file (called recall.par) as follows:
 
0        1
18      2
21      3
27      1
45      2
48      3
and so on...
Where in the right column, condition 1 is blank screen, 2 is a room with a lamp, and 3 is the lamp turned on.
 
My question is:
 
When I run the analysis to compare condition 2 to condition 1, does it subtract the average activation from 18-21 seconds minus the average activation from 0-18 seconds? Or does it simply subtract timepoint 18 from timepoint 0? Or what?  
 
When I set up a contrast to do condition 2 minus 1, I expected visual cortex activation, but instead, I saw deactivation. I am trying to figure out why this is the case. Any help would be greatly appreciated.
 
thanks,
Moe
 
Mohamed Zeidan
Research Assistant
Behavioral Neuroscience Laboratory
Department of Psychiatry
Massachusetts General Hospital
(617) 643-4756
 

From: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] On Behalf Of Lena Palaniyappan
Sent: Monday, March 22, 2010 4:43 PM
To: freesurfer@nmr.mgh.harvard.edu
Subject: [Freesurfer] Displaying parcellation labels asegstats2table

I am trying to obtain mean intensities of Destrieux parcellations using the following command.

asegstats2table --subjects <subjid vbms08>  --meas mean  --statsfile lh.aparc.a2009s.stats  --tablefile somename.txt

But the output text files does not contain any label names.
 instead it contains the following as output

Measure:mean    2.184    2.442    2.307    2.755    2.869    2.632    2.360    2.073    2.901    2.617    2.186    2.890    3.070    2.748    2.759    2.777    3.201    3.737    2.801    2.376    2.893    1.964    2.967    2.928    2.886    2.778    2.426    2.316    2.805    2.567    2.320    2.522    2.809    3.307    4.177    2.774    2.732    3.128    2.232    2.691    2.258    0.737    2.148    3.682    2.066    1.856    1.972    2.999    2.651    2.521    2.978    1.969    2.207    2.443    2.369    2.455    2.099    1.856    1.821    2.293    2.698    2.386    1.973    2.096    2.393    2.129    2.122    1.981    2.359    2.276    2.645    2.204    2.382    2.379    2.709
vbms08    0.509    0.525    0.482    0.442    0.444    0.706    0.706    0.595    0.551    0.615    0.468    0.499    0.338    0.518    0.472    0.588    0.54    0.881    0.606    0.554    0.453    0.518    0.949    0.763    0.565    0.53    0.52    0.492    0.491    0.522    0.731    0.909    0.393    0.518    0.631    0.448    0.953    0.673    0.305    0.631    0.521    1.353    0.552    0.828    0.595    0.457    0.607    0.538    0.643    0.5    0.721    0.43    0.471    0.53    0.492    0.333    0.471    0.457    0.451    0.489    0.549    0.452    0.427    0.661    0.608    0.531    1.182    0.41    0.476    0.481    0.777    0.559    0.677    0.547    0.417


How can I get the parcellation labels displayed?


Cheers
Lena

_______________________________________________________
Lena Palaniyappan
Clinical Lecturer & Honorary StR | Division of Psychiatry ( University of Nottingham)
South Block 'A' floor| Queens Medical Centre | Nottingham | NG7 2UH


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