Hi surfers, <br><br>I am working on generating surface ROIs from the retinotopy surface. <br>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. <br>
 And the path_example2_line.jpg are the line that is supposed to connect the dots and to be the correct boundary. <br>Notice the dots and the line do not overlap!<br>so when I draw a line on the flat map, Freesurfer actually doesn&#39;t draw the line I want it to be.<br>
<br>Has anyone met this problem before? Is there a better solution to create surface ROIs? Drawing the boundary on inflated surface?<br><br>Yang<br><font color="#888888"></font>