[Freesurfer] Clarification on Interpreting results cont'

Hi, Thank you so much for the clarification, so values listed under “CWP” column in "mc-z.abs.th13.sig.cluster.summary" file are my corrected p-values to be reported? (in this case having run monte carlo for multiple comparison correction) CONFIDENTIALITY NOTICE: This e-mail message,

[Freesurfer] Clarification on interpreting results

Hi, I have a 2 questions regarding properly interpreting results from QDEC. Will you please clarify the following for me? 1. What is the difference between stats table generated after correcting for multiple comparisons (i.e. monte carlo), vs the stats table generated after clicking "find

[Freesurfer] Demeaning covariates correctly?

Hi experts, I'm using QDEC to look at between group differences in LGI. According to a previous post I demeaned my covariates (age and surface area) inputted in my qdec.table.dat file by subtracting each value (i.e. each age) by the mean of all participant's ages and dividing it by the

[Freesurfer] pre-smoothing coomand line

Hi Freesurfer experts, I found the answer to my previous question on FreeSurfer Wiki regarding pre-smoothing command line for LGI ( I am interested in looking at between-group differences in vertwex-wise LGI values). I am now aware that the following command line must be used: recon-all

[Freesurfer] smoothing command line- LGI

Hi, I am interested in looking at between-group differences in in LGI on Qdec (I will look at surface area as well later). I have a question regarding the smoothing stage. My recon-all for all subjects has completed, and I have LGI values for each subject. For smoothing, I was going to run the

[Freesurfer] Back to native space after registration

Hi experts, Will you please briefly explain to me the rationale behind why subjects put back into their original space after alignment to the template (fsaverage)? and also, how this is done. Thanks so much, Avi CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for

[Freesurfer] Tessellation: factors that could affect number and size of faces

Dear FreeSurfer experts, I have a question regarding the tessellation step, in which the surface is covered by a mesh of triangles. 1. How would the number/sizes of triangles be affected/ alter as a result of different brain volumes/sizes of different subjects? i.e. would a subject with a

[Freesurfer] fsaverage template appropriate to use with pediatric population?

Hi experts, I have a few questions regarding the use of fsaverage template for my research: 1. Is the fsaverage template appropriate for use with pediatric population? (My sample is 6-16 years of age) 2. What possible errors can be expected ? What could possible alignment errors be? 3. Are