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Thu, 02/16/2017 - 14:57shallvin各位老师好: 我做出来了几个脑区的FC,现在想做连接系数的双样本t检验,请问该如何操作,rest好像只能对.nii图像进行检验;txt或者mat文件该如何做t检验,或者有什么toolbox可以做的,谢谢啦4417 reads
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Wed, 02/08/2017 - 08:08yubing各位老师: 最近投了一篇 文章到Wiley 旗下的杂志,已经接受了,给我发proof的邮件里面说 “please log in into Author Services (https://authorservices.wiley.com) and click on "My Dashboard." When you locate your article on the Dashboard,...8660 reads
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Tue, 02/07/2017 - 21:36panderssDear all, I would like to know if the bug that was found in AFNI's AlphaSim (and was then corrected), was also fixed in REST's AlphaSim. I could see that others have also asked this, but I could not find an answer. Best, Patrik4004 reads
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Tue, 01/17/2017 - 23:30Cassandra老师们好! 我在做两组被试(正常及病例组)两个亚频段(S4,S5) ALFF的分析,使用贵团队开发的dpabi V2.3 mixed effect analysis 运行时报错,我试过把协变量去掉以后运行成功,重新加入协变量后再次报同样的错误。我检查过数据的维度和mask 是一致的,协变量我是按照视频里说的方法在每个TXT文档下放四列(age,sex,eduyear,mean FD),顺序与group image对应,group image加载的顺序参照教程(Group1condition1,...6132 reads
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Sat, 01/14/2017 - 22:12cgx23DegreeCentrality_PositiveBinarizedSumBrainMap DegreeCentrality_PositiveWeightedSumBrainMap 请问老师DegreeCentrality跑出来的结果这两个文件名分别代表什么?都可以拿来做统计分析吗?7471 reads
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Wed, 01/11/2017 - 00:40NeuroguyHello, During my analysis with DPARSF I received the following error: Warning: Matrix is close to singular or badly scaled. The analysis finished fine however I am worried about my covariate files. Can you let me know if you think...3947 reads
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Tue, 01/03/2017 - 10:24luohaha老师: 您好,最近我一直在查关于双因素析因分析的资料,对此有些疑惑。如下文献是用SPM5做2X2的(基因X诊断)的双因素析因分析,他们是先分析诊断的主效应,然后再分析诊断与基因的交互效应。但我从统计学的书中看到的是:双因素析因分析首先要分析各因素的交互效应,若有交互效应后再进一步分析各因素各水平的单独效应;若无交互效应则各因素相互独立,才可以分析各因素的主效应。目前我只查到中国人发的这方面文献,而他们都像下面文献这样分析。难道是统计学的书错了吗?...4354 reads
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Tue, 12/27/2016 - 10:40mitaomian老师: 您好,我是最近刚开始接触fMRI,有几个关于Alphasim校正的问题想下请教各位老师,还是希望老师能在百忙之中帮忙解答: 一、用最新版DPABI对三组数据进行ANOVA分析时,同时进行了post-hoc,听严老师在最新的视频教程里说到post-hoc是已经经过校正的,那么在看ANOVA结果时P值如果选择0.05的话,再看post-hoc结果时,P值是写0.05还是0.016 (0.05/3)呢? ...5999 reads
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Wed, 12/21/2016 - 15:26zs1990各位老师,请问rsFC的回归分析应该怎么操作呀?rest里面的statistical analysis中只有相关分析,可是外审专家要求应该做回归而不是相关。8760 reads
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Tue, 12/20/2016 - 16:49twosocks各位老师好, 新的2.2版dpabi的统计模块中增加了permutation test选项,但不知道具体参数应该如何选择,以及每个选项各代表什么含义?还请各位老师同学指教,跪谢!6182 reads