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Mon, 09/24/2012 - 17:51wleewell论坛老师好！ 有几个问题想看看大家的意见。 1、AlphaSim与Gaussian random-field theory校正那个更严格，分别都更适用于那些情况呢？通常我发现GRF校正voxel P值设为z>2.3，这个值相当于p值多少呢，可否再设的松一点？REST新版加入了GRF校正，可否就该校正的参数设置及意义做一讲解呢？ 2、前面严老师说REST中的REST smoothest可以估计校正要求的平滑值，对此有些不解：统计学检验图估计smooth值有什么意义？ 3、我发现REST slice...8075 reads
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Mon, 09/24/2012 - 11:52FedeDear REST expert, I have a question about the statistic method for the FC analysis. We have a single case vs a group of controls(N = 12). We don't know which test is suitable for the comparison between this single case and a group of controls. Best regards...7824 reads
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Mon, 09/24/2012 - 04:21YAN Chao-GanDear all, A brief introduction of DPARSF V2.2 Advanced Edition has been updated to http://restfmri.net/forum/course Please see the updated "Part III" Release 120923. Thanks, Chao-Gan5390 reads
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Mon, 09/24/2012 - 01:29lena123Dear Chao-Gan et al., Greetings. I am running voxelwise bivariate GCA from the GUI. Unfortunately only the x to y maps are getting z transformed, not the y to x maps. Can you suggest a solution? I have a load of y to x maps that I want to normalise using the...7021 reads
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Sat, 09/22/2012 - 09:44zhangyue最近对小世界网络很感兴趣,有一些问题想请教严老师. 1 有些文献提到,在比较病人组和正常对照组的全局小世界网络参数,比如local efficiency时候,说采用了FGR校正.我有些奇怪,每个被试只有一个local efficiency值,为什么还要校正?是不是可能是cost取值比较多,比如说cost 0.1~0.4,步长0.01的话,总共有30个值, 把这30个值同时考虑校正,比如说最严格的取p=0.05/30? 2 在比较两组数据之间的脑区的参数时,比如说nodal degree,...7997 reads
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Sat, 09/22/2012 - 05:50comaniHello, I got the following error when trying to load the overlay a T map generated with the 2 sample T test function. Do you have any suggestions on how to fix it? I am using Matlab 2011b with the Image Processing and Statistics toolboxes. Thank you....4488 reads
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Sat, 09/22/2012 - 00:16liudagang严老师您好，做功能连接时在球形坐标区选择规定的ROI时，怎么才能知道我想选的感兴趣区的具体坐标是多少呢？很多情况下是去查阅文献，有没有一个表能总结一下的，到时候就一目了然了，谢谢您！4653 reads
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Thu, 09/20/2012 - 20:27lena123Dear REST team There seems to be some problem in calling the mPF_list variable for degree centrality I am using a recursively called directory with 20 subjects, each subject folder containing 235 volumes Pls see the message below: Starting matlabpool using...9354 reads
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Wed, 09/19/2012 - 20:16liudagang严老师，在您细心的指导下目前大部分知识已经掌握了，我现在有一批数据，是关于脑梗死的病人。但是我的病人虽然都是单侧的，但有左侧的也有右侧的，我想把它们放在一起分析，怎么设计才能出去部位对结果的影响呢？谢谢严老师！9572 reads
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Wed, 09/19/2012 - 18:50vvillaltaDear all, We have analyzed alff and falff comparing HC and OCD subjects within different bands (slow 2, 3 4 and 5). We would like to regress cardiac and respiratory information from the alff/falff maps. Could you please indicate me how to do so? Thanks very...3921 reads
