Creating a scout is only possible with 1 vertex
Can you please detail your issue (screen captures, list of operations you perform, type of data you are looking at)?
Please make sure first that the button “Constrained” is not selected in the surface tab:
http://neuroimage.usc.edu/brainstorm/Tutorials/Scouts#Growing_a_scout
[QUOTE=Francois;9863]Can you please detail your issue (screen captures, list of operations you perform, type of data you are looking at)?
Please make sure first that the button “Constrained” is not selected in the surface tab:
http://neuroimage.usc.edu/brainstorm/Tutorials/Scouts#Growing_a_scout[/QUOTE]
I have made head/skull/cortex files from individual subject MRIs using BrainSuite. I extracted a surface for cerebellum and merged it with the cortex surface. I have been creating scouts in the past on this surface. Apparently Brainstorm has been changed. I can open the previously computed MNE default source model but get an “Error in tess_hemisplit.m” Line 88: Error: File union.m Line: 1 Column:1 message. Clicking OK does bring up the source model image.
The Desikan Killiany atlas sort of still works (waveforms are generated but after the same error message) but when I try and create a scout it has only 1 vertex.\With the present version of Brainstorm I cannot increase the number of vertices independent of the “constrained” button choice. Previously I could create a new scout of any size.
Also the scout waveforms generated from the atlas and displayed on the screen are sometimes in pAm and sometimes in no units. Saving a pAm waveform as a snapshot > file > ASCII .txt changes the units to what looks like fT (~10E-12).
Is there a way to download previous versions of Brainstorm?
Thanks,
Claudia
Hi Claudia,
This error in union.m indicates that you have added to your path a function name union.m that shadows the default Matlab function.
Without access to this function, many things won't work in Brainstorm.
You can probably type "which union" to identify the culprit.
Also the scout waveforms generated from the atlas and displayed on the screen are sometimes in pAm and sometimes in no units
This is probably because some of the signals you are displaying are normalized, and some are not.
If it is not the case, please send me a detailed example.
Is there a way to download previous versions of Brainstorm?
No, fixing the bugs in the current version is far more profitable for the community than distributing older versions.
Sorry for the inconvenience.
Francois
Hi Francois
Thank you very much for your prompt reply. I removed another analysis package from the matlab path and that solved the error messages and the 1 vertex problem.
The scout waveform units on the plots are now reliably in pAm but the snapshot > file > ASCII .txt still the units to what looks like fT (~10E-12).
Is the any way to get an ASCII file in pAm?
Thanks,
Claudia
Hi Claudia,
All the measures in Brainstorm are saved in international units. In your case, the values are saved in Amper.meter.
If you want the exported values to be in pAm, you have first to multiple them with 10^12 (process Pre-process > Scale values).
Francois
Thank you very much!