Hi Bruce,

Thank again for your advice. I am not sure about the data collection but I will find out soon. In the mean time I have two more questions:

1). The FS tutorial shows for the surface outlines  (by loading the -surfs) three line: the yellow indicating the white surface, the red for the pial and a green line for the orig data. When I plot the surfs I have only the yellow and red line. Can I get the green line somehow?

2). I suppose the two important brain structures,  amygdala and hippocampus must be included in the pial surface as a grey matter (I hope I am right) .

If they are not enclosed in the pial surface is there a way to  resolve  this issue? How I should edit the pial surface in this case? How important is to have them enclosed for my cortical thickness studies and for the GLM group analysi?