Re: [Freesurfer] lh.ROI45.label and lh.ROI44.label overlapping

2012-08-06 Thread Bruce Fischl
Hi Gari sorry, I'm a bit confused. Are you using the individual subject estimates of 44 and 45 generated by FreeSurfer, or mapping them from MNI space? In either case you can get overlap unless you pick the most probably label at each point. cheers Bruce On Mon, 6 Aug 2012, Garikoitz Lerma

Re: [Freesurfer] file conversion

2012-08-06 Thread Bruce Fischl
Hi Colin have you tried mri_convert? We did support bshort as a format (such as it is!), although it hasn't gotten much use for years. Try something like: mri_convert file.bshort file.nii cheers Bruce On Sun, 5 Aug 2012, Colin Reveley wrote: also -  I'm assisting someone with a dti

Re: [Freesurfer] contrast matrix

2012-08-06 Thread Douglas N Greve
Hi Meng, the first row is what you want. The second row tests for an interaction between diagnosis, genotype, and age. doug On 08/04/2012 10:23 PM, Meng Li wrote: Hi Freesurfers, My experimental design includes 3 discrete factors and 1 continuous variables: Discrete factors: diagnosis

Re: [Freesurfer] file conversion

2012-08-06 Thread Douglas N Greve
Or try mri_convert file.bhdr file.nii On 08/06/2012 09:30 AM, Bruce Fischl wrote: Hi Colin have you tried mri_convert? We did support bshort as a format (such as it is!), although it hasn't gotten much use for years. Try something like: mri_convert file.bshort file.nii cheers Bruce

Re: [Freesurfer] lh.ROI45.label and lh.ROI44.label overlapping

2012-08-06 Thread Garikoitz Lerma Usabiaga
Hi Bruce, thanks for your answer. I am mapping a volume ROI (BA45) from SPM in MNI 152 space to fsaverage (the result is the red ROI). The problem is that: - when I load the BA45.label from FS in order to compare, they are not quite similar. My main problem is to know if the differences are

[Freesurfer] polar angle analysis with clockwise- and counterclockwise-rotating wedges

2012-08-06 Thread Thomas Janssens
Hi, I am currently analyzing some retinotopy data. For the polar angle stimulus we had both clockwise and counterclockwise stimuli. Both of them started at the top of the screen (12 o'clock), each run includes 4 full cycles and ends with the last wedge slightly before/after 12o'clock. We have

Re: [Freesurfer] lh.ROI45.label and lh.ROI44.label overlapping

2012-08-06 Thread Bruce Fischl
Hi Gari they overlap as the labels represent every location that could possibly be in either label. Unless we could predict them perfectly they have to overlap, since they share a border. With 5.2 we will include different default thresholds, but at the moment you have to do it yourself. You

Re: [Freesurfer] polar angle analysis with clockwise- and counterclockwise-rotating wedges

2012-08-06 Thread Douglas N Greve
what is it that is noisy? The angle map or the p-value map? Can you send pics? doug On 08/06/2012 12:41 PM, Thomas Janssens wrote: Hi, I am currently analyzing some retinotopy data. For the polar angle stimulus we had both clockwise and counterclockwise stimuli. Both of them started at

Re: [Freesurfer] lh.ROI45.label and lh.ROI44.label overlapping

2012-08-06 Thread Douglas N Greve
Gari, can you check whether you have ?h.BA.annot in your subject/labels folder? this is an annotation of all the BA labels. They are non-overlapping; overlaps are resolved by the one with the most probability. I can't remember whether this made it into 5.1 or not. doug On 08/06/2012 01:18 PM,

[Freesurfer] (no subject)

2012-08-06 Thread Ryan
Hello, I'm conducting a longitudinal analysis and encounter an error when running the long_mris_slopes command (this is contained in the online tutorial: http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/LongitudinalTutorial). The error that arises within a minute is ERROR -10 : mris_calc

Re: [Freesurfer] polar angle analysis with clockwise- and counterclockwise-rotating wedges

2012-08-06 Thread Douglas N Greve
I see what you mean. Is it possible that they are the same direction? When you look at the angle values when running them individually, are they the same or opposite sign? Are you sure that the par file lists one as positive and one as negative? doug On 08/06/2012 02:56 PM, Thomas Janssens

Re: [Freesurfer] Subcortical segmentations

2012-08-06 Thread Jordan Pierce
When using the norm.mgz, what is the best way to evaluate the accuracy of the thalamus labeling? If lateral thalamus has low contrast with WM, how can we tell where its borders should be? Or is it best to assume that the automatic segmentation has done sufficiently well?   Jordan Pierce

[Freesurfer] aseg.stats ICV question

2012-08-06 Thread Natalie Han
Hi, all, anyone knows that if the ICV in the aseg.stats means the whole volumes inside the skull or the total volumes of GM and WM? Does it include the CSF between the skull and the cortex? Thanks. Natalie ___ Freesurfer mailing list