Hi Freesurfer experts,

I am working on a logitudinal data analysis using freesurfer pipeline. I followed all the steps like in WIKI and the analysis was great. Kindly I have the following questions:

1. In wiki "http://freesurfer.net/fswiki/LinearMixedEffectsModels"-- in the example mentioned there, the command "

lme_lowessPlot(M(:,1),Y(:,1)+Y(:,2),0.70,M(:,2));"

What is the Y(:,2) refer to ?

2. Can I plot multiple measures at the same time ( for example if I have in my qdec table multiple columns for multiple measures ( left precentral gyrus cortical thickness, right precentral gyrus cortical thickness, LH mean thickness , RH mean thickness) can I plot all these measures at the same time instead of running the previous command multiple times?

3. If I have three groups in my qdec table. The previous command line is plotting three lines. Are these lines in th esame order of the groups in qdec tables?

4. The BW in this command was chosen 0.7 and the default is 0.6 how can I choose this number correctly?

Thanks for your support!

Bests,
John Anderson

Senior Research Associate
Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834
Fax: +1 (603) 646-1419