Hi surfers,
I am working on generating surface ROIs from the retinotopy surface. We cut the occipital lobe and draw paths on the flattened map to create labels. However, I found that there are distortions on the flat map that cause large errors when drawing these paths. I attached two pictures. The path_example2_dots.jpg are the dots that I selected to draw a path. Basically it is the method we use to demarcate the boundaries of visual areas. And the path_example2_line.jpg are the line that is supposed to connect the dots and to be the correct boundary. Notice the dots and the line do not overlap! so when I draw a line on the flat map, Freesurfer actually doesn't draw the line I want it to be.
Has anyone met this problem before? Is there a better solution to create surface ROIs? Drawing the boundary on inflated surface?
Yang
