>From my understanding qdec fits a glm to each vertex. It also smooths the data.
>From the documentation I do not have a clear understanding of whether qdec uses smoothed data for input (It appears that is does) or smooths the coefficients or t-tests after analysis, or both. Additionally, the resulting contrast results appear to have patches of significance. What is the processes that makes patches out of individual vertex results? Do a certain number of contiguous vertexes need to be significant for their values to be connected into a patch? -- Best Wishes, Richard E. Frye, M.D., Ph.D., F.A.A.P. Assistant Professor of Pediatrics and Neurology University of Texas Medical School at Houston 7000 Fannin -- UCT 2478 Houston, TX 77030 Office: 713-500-3245 e-mail: [EMAIL PROTECTED]
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