What is being stored in private.dat in the NIFTI header? i=spm_vol('file'); i.private.dat seems to contain all the voxel values.... How this different from the actual .img file that stores the data? ----------------------------------------------------------------------------------------------------- Which of the following is used by SPM to read in the NIFTI data: i.mat i.private.mat i.private.mat0 What is the difference between the three? -- Best Regards, Donald McLaren ===================== D.G. McLaren University of Wisconsin - Madison Neuroscience Training Program Tel: (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.