Thank you Bruce,

I want to do source localization based not on the cortex surface sources but on discrete sources located in specific places in deeper structures (brainstem).

I will contact Matti then.

Thanks again,

-- Andrés

Hi Andres,

I'm not sure I understand. What discrete set of points are you talking about? A downsampling of the surface? If so, I think Matti (ccd) knows how to do this.

cheers, Bruce On Wed, 3 Dec 2008, Andres Felipe Salazar Gomez wrote:

...

Good evening freesurfer list,

I need to create a text file containing discrete locations in MRI coordinates (a group of points in the MRI images inside the brain, not on the cortex). I need this text file to be used in the mne_volume_source_space utility. The idea is using a discrete source space (based on the coordinates obtained from the needed text file) instead of the surfaces that are usually employed. I know I can get this text with Freesurfer but this is a new feature for me.

Can anyone give me a clue on how to do this?

Thank you for your help!