Unequal variance assumption/uneven group size in DPABI

Submitted by LukeN on Wed, 10/28/2020 - 03:47

Dear experts,

Thank you for creating this wonderful software. I have been finding it to be very useful!

I have a study with uneven group sizes (40 patients, 70 controls), which has caused a reviewer some concerns. My understanding is that other software packages (SPM, FSL) allow for the assumption of unequal variances to be specififed as a way to deal with this. Is this also true for DPABI, and if so which methods of correction would it apply to (GRF, permutation etc.)?

Thank you in advance,

Luke

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Multiple comparison correction

Submitted by XING GAN on Tue, 10/27/2020 - 07:04

尊敬的严老师：

        我在用rest做完“two sample t-test”以后，将T图显示在了rest--slice viewer里并做了多重比较矫正，但是经过了多重比较矫正以后发现我的T图消失了，我不知道什么原因导致的，请您给予解答。

        实验结果我在附件中进行了展示，请您查阅。

       非常感谢。

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结果超大脑范围

Submitted by lxming on Tue, 10/27/2020 - 01:57

rest -- slice viewer

Submitted by XING GAN on Mon, 10/26/2020 - 08:48

尊敬的老师：

        我在用rest的slice viewer去查看two sample t-test的结果时，我加入的T图（overlay）和我的底图（underlay）不能对齐。我不太清楚是什么原因导致的，希望您能给予解答，不甚感激！

        我附上了我的结果，麻烦查阅一下。

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Submitted by kiviljc on Tue, 10/20/2020 - 02:40

Hi R-FMRI team,

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Submitted by kiviljc on Tue, 10/20/2020 - 02:40

Hi R-FMRI team,

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AMD处理器兼容性问题

Submitted by hdy0115 on Fri, 10/16/2020 - 15:53

大家好，最近准备换电脑，想请教一下有人的电脑是Ryzen 4000系列的处理器的吗？目前和matlab以及DEPABI的兼容性怎么样？十分感谢！

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求灰质体积问题！

Submitted by mshua001 on Thu, 10/15/2020 - 13:45

尊敬的严教授，您好，我想请教一下关于求灰质体积的问题：

我们在求海马的体积的时候，用您的软件：DPABI_ROISignalExtracter.m这个工具的时候，实际上是求的这个mask内所有体素的mean值，如果改成求mask内的所有体素的和（sum）可以吗？

这两个有区别吗，谢谢老师！

 

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