[Freesurfer] tksurfer marking nodes on opposite side of brain

2006-09-15 Thread Johannes Klein

Hi everyone,
I'm currently hand-drawing some labels using tksurfer. Unfortunately, 
quite often a node that I try to click will not be selected. Instead, 
the mark is placed on the surface behind the one I'm viewing, e.g. 
when trying to outline calcarine structures, the node mark will appear 
somewhere on the lateral surface.
I wonder if anyone else has run into this? Is it possible to constrain 
tksurfer's node selection to the currently visible part of the cortex 
only? Alternatively, an undo feature to de-select the last point clicked 
would save me re-drawing the whole outline, but in my Edit menu, 
tksurfer consistently says Nothing to Undo. Do I need to enalbe the 
Undo feature somewhere? I'm running FS 3.0.3 centos4.

Thank you very much,
Johannes
___
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer


Re: [Freesurfer] tksurfer marking nodes on opposite side of brain

2006-09-15 Thread Kevin Teich

I think the version that you have supports individual deslecting. Try
middle-clicking a selected vertex. You may need to redraw the surface
to see if it was deselected.

On Fri, Sep 15, 2006 at 04:37:01PM +0100, Johannes Klein wrote:
 Hi everyone,
 I'm currently hand-drawing some labels using tksurfer. Unfortunately, 
 quite often a node that I try to click will not be selected. Instead, 
 the mark is placed on the surface behind the one I'm viewing, e.g. 
 when trying to outline calcarine structures, the node mark will appear 
 somewhere on the lateral surface.
 I wonder if anyone else has run into this? Is it possible to constrain 
 tksurfer's node selection to the currently visible part of the cortex 
 only? Alternatively, an undo feature to de-select the last point clicked 
 would save me re-drawing the whole outline, but in my Edit menu, 
 tksurfer consistently says Nothing to Undo. Do I need to enalbe the 
 Undo feature somewhere? I'm running FS 3.0.3 centos4.
 Thank you very much,
 Johannes


-- 
Kevin Teich
___
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer


[Freesurfer] FW: field sign and colour lables

2006-09-15 Thread kristofer kinsey










I have a question regarding colour labelling for the
retinotopic maps generated by Freesurfer. Im running
Freesurfer-Linux-rh9-stable-pub-v3.0.2 and have successfully generated the
polar, eccen, and field sign maps (no errors). The images seem to
differentiate the occipital regions, except that the colour labelling appears
to be incorrect. In the eccen image, for example, the order of the
colours start out as red, green, blue and using the Configure Overlay Display
Inverse its green, blue, red. According to my notes one should see
fovea=red, parafoveal=blue and periphery=green. Also, with the field sign
image, the area that should be V1 shows up as blue instead of yellow
(cant seem to invert the colours). 



Ive since gone back to double check that my
procedure is correct and re-checked my registration and cant seem to
find my mistake. I was hoping to get some help to fix this problem.
In case it helps, Ive attached a few images of the maps that were
generated.



Cheers

kk



__

Kristofer Kinsey, PhD

Neurosciences Research Institute

School of Life and Health Sciences

Aston University

Birmingham B4 7ET

Web Site: www.physiol.ox.ac.uk/~kk3/












attachment: rh.occip.3d.patch.polar.jpg
attachment: rh.occip.3d.patch.ecc.jpg
attachment: rh.occip.3d.patch.fieldsign2.jpg
___
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer