Anna, My peak_nii scripts will do this. It creates a map with clusters where each cluster is different number. www.martinos.org/~mclaren/ftp/Utilities_DGM The one thing to double check is the L/R flip going between these two programs. Best Regards, Donald McLaren ================= D.G. McLaren, Ph.D. Postdoctoral Research Fellow, GRECC, Bedford VA Research Fellow, Department of Neurology, Massachusetts General Hospital and Harvard Medical School Office: (773) 406-2464 ===================== This e-mail contains CONFIDENTIAL INFORMATION which may contain PROTECTED HEALTHCARE INFORMATION and may also be LEGALLY PRIVILEGED and which is intended only for the use of the individual or entity named above. If the reader of the e-mail is not the intended recipient or the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that you are in possession of confidential and privileged information. Any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited and may be unlawful. If you have received this e-mail unintentionally, please immediately notify the sender via telephone at (773) 406-2464 or email. On Mon, Jan 9, 2012 at 11:46 AM, Anna Zamm <[log in to unmask]> wrote: > Hello All, > Does anyone have a suggested method for creating FSL ROIs based on > significant clusters of activation from second-level analysis in SPM? > Thanks in advance for your help, > Anna >