about the resting state fmri workshop

刚看了workshop的介绍,非常好的内容,包括了fMRI, EEG, DTI; ICA, functional connectivity; psychiatric disorder etc. 而且邀请到了biswal和kiviniemi两位专家,一位是先驱,一位是fast ICA专家 (biswal的英语口音比较难懂,大家做好心理准备 :)....

可惜我4月没有时间去听讲座。可能很多有兴趣的人也有种种原因不能前去。请问组织者能否在会后提供讲座ppt/pdf下载?或者会议录像下载?

谢谢 

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Bandpass filtering

 Hi,

I'm trying to use the rest_bandpass function in your toolkit, but I can't get it to read my data. Specifically, I get the error message below. If I try to use the GUI, I get an error dialog saying "There is no data or non-data files in this directory".

I get the same message for different datatsets. I have made sure that only the volumes and not other files are in that directory. I can use the image files with no problems using other analysis packages.

 

Thanks for your help,

Alex

 

 

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Re: "sunshine"'s question: spatially smoothing before or after ReHo

In a few earlier studies, spatilly smoothing was performed before ReHo analysis. However, Mr. LONG Xiang-Yu found that, for some voxels, the ReHo value is very high because spatially smoothing certainly increase the local similarity. That is why we now recommend to perform spatially smoothing after ReHo calculation. Please note that we are not sure which is "better" for group level analysis, especially between-group studies. I suggest you can compare the results. 

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求助

我看了一篇关于resting的文章,上面有这么一段话:After slice acquisition correction and head motion correction, the fMRI was normalized to the standard SPM2 echoplanar imaging template, re-sampled to 3-mm cubic voxels, and then  spatially smoothed with a Gaussian kernel of 4* 4*4mm3 full-width at half-maximum. The resulting fMRI data were temporally band-pass filtered (0.01~o0.08 Hz) to reduce the low-frequency drift and physiological highfrequency respiratory and cardiac noise [1] for further ReH

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SLICE VIEWER

 Hi All, 

I am a new REST toolkit user,

I would like to know which images I should use in the slice viewers windows  (UNDERLAY-OVERLAY), in order to highlight activation. 

I have uploaded structural and ReHo map but matlab gives and illegal image error message.

Best Regards

S

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请教,关于SPM5中PairedTTest的问题。

用SPM5的PairedTTest处理数据时,选择刺激组和对照组数据的先后顺序对结果有影响么?

我分别试了对调它们的顺序,然后contrast都是1 -1,发现结果一模一样,T值的正负也是一样。

如果说数据选择的先后顺序没有影响,那应该如何来解释结果呢?比如说刺激数据在前,对照数据在后,contrast是1 -1,那T值是正值的脑区代表的是刺激>对照,还是刺激<对照?

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如何将smReHoMap转换成AFNI格式?

请问,想用AFNI来看数据处理的结果,如何将smReHoMap或TTest后的数据转换成AFNI的格式?可以用MRIcroN么,试了一下dcm2niigui好像转换不成功哦。

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Mask error when running ReHo and ALFF

 Dear All, 

I am trying to analyze a rest condition with rest toolkit, but when I run both ReHo and ALFF with either default mask and no mask option the analysis stops because of mask size error.

Could you please help me to overtake this problem and proceed with the analysis 

Thank you very much

Best Regards

Annalaura

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求助

我按照你们的那个视频教程处理了一组静息态数据,用求reho的方法做的,里面有一步是将得到的smRehoMap——图像减1,我想向各位老师请教一下在什么情况下能够得到reho的值为1?使得减1后为0.谢谢!

祝好!

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