Assuming that you have a map for each subject indicating which voxels are active in each subject (active voxel has a value of 1, all other voxels have a value of 0), you can use imcalc to create a sum image of all your subjects. The sum image would indicate the number of active subjects at each voxel. Use the option to read data in as a matrix and the equation should be sum(X).
Best Regards, Donald McLaren ================= D.G. McLaren, Ph.D. Research Fellow, Department of Neurology, Massachusetts General Hospital and Harvard Medical School Postdoctoral Research Fellow, GRECC, Bedford VA Website: http://www.martinos.org/~mclaren 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 Thu, May 14, 2015 at 12:24 AM, Pavel Sokolov <[log in to unmask]> wrote:
Hello, Experts!
Please, help.
Advise some tool, script or method for backprojection. I want to make the map with scale (0, participants number ) indicating voxel activation frequency across subjects.
