请求帮助。

Submitted by stevenlee697 on
Forums
各位老师好,我是一名初学者,进行感音神经耳聋的研究。现在双样本检验后,得到T值,用REST SLICE VIEW进行图像显示,ALPHASIM校正中,当RMM=4时,XJVIEW显示有18个CLUSTER;RMM=5时有11个,RMM=6时有7个。不是说RMM=4时是面对面的方法,校正更严格,怎么CLUSTER还最多??再有我应该用哪个RMM值?另外,怎么用XJVIEW的报告制做表格,一个CLUSTER中有很多个脑区(从多到少的VOXEL)选哪几个呢?多谢,多谢!!

请教关于gray matter density和 gray matter volume

Submitted by liufeng on
Forums
最近看文献,只知道vbm经过modulate后是volume,不经过modulate是的density,不过具体表示了什么还不是很清楚。而且为什么经过modulate就是体积也不是太清楚。下面一段话是文章中的,没太理解,请指点下,谢谢。还有,用哪一个指标比较好也没有具体的说法吧(体积还是密度?),是不是喜欢用哪种就用哪种?有没有什么经验呢?

本周二(12月6日)组会

Submitted by jwb on
Forums
本周二汇报的文献:Reducing inter-subject anatomical variation: Effect of normalization method on sensitivity of functional magnetic resonance imaging data analysis in auditory cortex and the superior temporal region,详见附件。 这篇文献主要内容:SPM2-normalization,SPM5-unified segmentation,SPM5-DARTEL,HAMMER四种配准方法对听觉任务fMRI激活结果的影响,同时也考察了不同配准模板(ICBM152,Colin27,ICBM453)对配准结果的影响及不同配准算法下平滑和不平滑激活结果的差异。

Image Dimention Errors

Submitted by Chris Stevens on
Forums
I have used SPM to preprocesses my data before using the REST utility to convert the data from .nii to niftiPairs. But I am now running into problems and I receive errors and warnings in many of REST's tools about the dimensions of my images. Here are all the problems I've encountered:

Procedure for performing Paired T-Test?

Submitted by Chris Stevens on
Forums
Hello, I'm attempting to perform a Paired T-Test on the functional connectivity of two resting state conditions within-subject. I have a Placebo run and a Control run for the subject. First I converted my .nii files to nifti pairs using REST's conversion utility. Then I used the Functional Connectivity tool to create a FC and zFC Map for each condition individually using the same ROI location. Then I placed the zFC maps into their own folders (I have 1 folder for the zFC map from the Placebo run and another folder for the zFC Map from the Control run).

本周二(2011.11.29)组会通知

Submitted by jwb on
Forums
本周二继续文献报告: 报告的文献为:《Reducing inter-subject anatomical variation: Effect of normalization method on sensitivity of functional magnetic resonance imaging data analysis in auditory cortex and the superior temporal region》。 这篇文献主要内容:SPM2-normalization,SPM5-统一分割,SPM5-DARTEL,HAMMER四种配准方法对任务fMRI激活结果的影响,同时也考察了不同配准模板(ICBM152,Colin27,ICBM453)对配准结果的影响及不同配准算法下平滑和不平滑激活结果的差异。详见附件。