I know that the aseg atlas provides a number of voume measures (e.g. EstimatedTotalIntraCranialVol, TotalGrayVol), but is there a variable for an average cortical thickness? I’d like to see if thickness in some of the regions is associated with a variable of interest over and above an overall main effect, so would like to control for the average thickness, but can’t figure out a good way to do that.

Thanks!

Maria