Hi all,

I have a little question to ask. I want to know what mean is "no_peak" ? Does it mean that no significant group differences were detected? No coordinates reported in the papers?
In AES-SDM tutorial:
Take a look at the names and contents of these text files: coordinates are written in a separate text file for each study, and the filename is just a very short identification of the study (e.g. the name of the first author), plus a dot, plus the software and stereotactic space of the coordinates ("spm_mni", "fsl_mni", "other_mni", "spm_brett", "fsl_brett", "other_tal" or "no_peaks"), plus a dot, plus "txt".

Best wishes

Thank you!

Hi Haiyang,

Yes, if a study reports no actiavtion peaks for a given contrast (e.g. group difference) then use an empty textfile named no_peak.

Best

Originally posted by Jorge Witman: Hi jroge,
Thank you for your help. Did you see any reference that include the study of  the "no_peak" or explain it. I want to cite some reference in my meta-analytic study.

Best

Hi, no it is mentioned in the SDM manual. Best, Jurriaan

Dear Haiyang,

as Jorge stated, if a study reports no peaks you can use an empty text file with the extension ".no_peaks.txt". Indeed, you could alternatively use an empty text file with the specific extension for the space used in the study. But if you "no_peaks.txt", you don't even need to look for which space was used in the study.

Hope this helps,

Joaquim