Hi, All. The following might be a question asked before, and we are meeting the same problem now, because we can't not find the corresponding code in the MarsBaR Documentation. Can anybody get us out of this problem? "Hi, Recently I read an article from J Cogn Neurosci. When the authors did the ROI analysis, they used Mean Parameter Estimate to copaire difference of activation between conditions. I'm wondering what's that Mean Parameter and how can we do that except for extracting percent of activated voxels. That article is as follows: Quadflieg, S., Turk, D. J., Waiter, G. D., Mitchell, J. P., Jenkins, A. C., & Macrae, C. N. (2009). Exploring the neural correlates of social stereotyping. J Cogn Neurosci, 21(8), 1560-1570. Thanks. Dingcheng." Best regards. Sincerely yours Liang