Sulcal line drawing

Written by Owen Phillips. Email Dr. Katherine Narr if you have any questions. For more information, see the protocols page.

Close up on an Object surface mesh


After Freesurfer has finished running it will output .pial and .white surfaces. You can convert these to object (.obj) format using the following steps. This is useful because .pail surfaces only work in Freesurfer programs. Important, control lines are no longer needed. So don't draw them. Also, the same lines should be drawn on all subjects, so at the beginning of a data set, it is best to choose which lines will be drawn.

  1. Surface Curve Protocol (from Dr. Elizabeth Sowell's lab)
  2. Medial Lines Protocol (from Dr. Elizabeth Sowell's lab)