yes, it's rigid and used to be sum of squares but in the newer versions we will be using Martin's robust registration (which is a tukey biweight instead of SSE)
On Tue, 25 Jun 2013, Parker, Christopher wrote:
Hi, I understand that the recon-all script registers and then averages two anatomical images (after bias field correction) if two are provided in the "orig" folder, before performing the other parcellation stages. I am writing a report and it might be good to mentioned what registration is used. I'm guessing this is a rigid registration using sum of squared differences cost function?
Best, Chris