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You can use any MNI underlay that you want. The underlay won't provide anatomical names, for that you'd need an atlas. If you are using FIVE (functional image visualization environment), then you can see the anatomical location in the upper right hand corner of the screen. These locations are based on the AAL atlas. 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 Sun, Dec 22, 2013 at 8:13 PM, Rujing Zha <[log in to unmask]> wrote: > Hi Helmut and others, > Thanks for your kind help, Helmut. > Seeing the vbm result, (that is to say, I have a overlay), I want to > localize the region name. So what MNI underlay I should use? > Thanks. > All the best. > > 2013-12-23 > ------------------------------ > *Rujing Zha* > ------------------------------ > *发件人：*"H. Nebl" <[log in to unmask]> > *发送时间：*2013-12-23 01:01 > *主题：*Re: [SPM] mask and underlay in vbm8 toolbox > *收件人：*"SPM"<[log in to unmask]> > *抄送：* > > Dear Rujing, > > > > 1) is difficult to answer, it depends what you want to do with the mask. If you've asked about the mask for model specification, this is typically not required / automatically done. Go with "Threshold masking" set to "Absolute" and then enter a threshold value of 0.1 or 0.2. This means the model will be based on those voxels with have a value of 0.1 or 0.2 at least in all of the subjects (which would correspond to a probablity of 10 or 20% for GM in your case probably). > > > Concerning 2) , you might want to use the usual templates or create a study-specific template averaged across the different normalised anatomical volumes (make sure they were normalised with the parameters/flow fields of the segmentation step you've already conducted). Instead of the anatomical volumes you could also use the unmodulated or modulated grey matter files of course, it might also be useful to rely on the average of the smoothed versions (as forwarded into the analysis). A study-specific template has some advantages I'd say, as the reader gets an impression of the quality of the segmentation. > > > Hope this helps, > > Helmut >