报错

Submitted by 287391600 on
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教授: 您好! 我是一名初学者,做功能连接去除协变量那步,老是报错,说我内存不够还是怎么回事,不知道怎么解决。 报错如下: Load mask "Default". Build mask. Wait...??? Error using ==> times Out of memory. Type HELP MEMORY for your options. Error in ==> rest_RegressOutCovariates at 36 AllVolume=AllVolume.*mask; Error in ==> rest_RegressOutCovariates_gui>Run_Callback at 241 rest_RegressOutCovariates(handles.Cfg.DataDirs{x,

2011年杭州静息态功能磁共振及脑连接组研讨会

Submitted by dongzy08 on
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我是新手,用DPARSFA的时候总遇到很多问题。

Submitted by 南沟泥河 on
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大家好,我是新手,有些问题想向高手请教。 我在做数据分析的时候,如果用DPARSF点击run的时候就没出过什么问题,但是由于我的参数,我觉得似乎用DPARSF做出的结果不会突出高分辨的扫描优势。于是我就换到DPARSFA,然而在应用DPARSFA的时候一点击run就会不停报错。我不确定是不是因为我的扫描参数造成的影响。我的扫描参数是:TR:4.5秒, voxel size:1.5x1.5x2.0,扫描层数:64。请问这些参数在DPARSFA下面应用的时候需要注意哪些地方呢? 谢谢!

dparsf工作目录无法选定

Submitted by ljhswy on
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dear chaogan, 我在matlab2010b里装载了dparsf2.0,但是打开以后点选工作路径的时候弹出提示框按ok之后没有反应,命令行出现如下字段: ??? Attempt to reference field of non-structure array. Error in ==> DPARSF>btnSelectWorkingDir_Callback at 247 theDir =handles.Cfg.WorkingDir; Error in ==> gui_mainfcn at 96 feval(varargin{:}); Error in ==> DPARSF at 41 gui_mainfcn(gui_State, varargin{:});

运行DPARSFA 不停跳出以下提示,并且对spm的调用比平常要慢

Submitted by insular on
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Warning: The fourth output, VERSN, of FILEPARTS will be removed in a future release. > In fileparts at 35 In spm_slice_timing at 188 In spm_run_st at 25 In matlabbatch/private/cfg_run_cm at 29 In cfg_util>local_runcj at 1363 In cfg_util at 699 In spm_jobman at 207 In DPARSFA_run at 236 In DPARSFA>pushbuttonRun_Callback at 969 In gui_mainfcn at 96 In DPARSFA at 30

Be cautious when regressing out covariates

Submitted by zangzx on
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Be cautious when regressing out covariates. We simulated three random timecourses X, Y and Z that are normally distributed to perform linear regression. Let Y to be the ROI timecorese and X, Z to be the covariates. The regression coefficients and residual after two-factor linear regression are extremely same with that of two Unary linear regressions. The results are as bellow:

关于重复测定的随访资料分析

Submitted by Qiang on
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严老师好: 我同您请教一个有关同一批受试者在不同时间点接受rfMRI检测的问题。应该如何分析会比较好一些。REST好像没有重复测定的方差分析,在分析VBM 时,有的文章使用前后两次时间点相减得到新的差异影响,然后比较差异影像在正常和患者的差别,不知Reho,FC和ALFF等指标可不可以使用这种分析。 谢谢,期待你的指教!

ALFF的问题

Submitted by Champagne on
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各位老师好,请教两个关于ALFF的问题,谢谢: 1、我查看了REST里面的ALFF源程序,计算能量谱 = 2 * 频谱的平方 / N,请问这里为什么要除以N? 2、左西年老师的文章《The oscillating brain: Complex and reliable》中Fig1和公式(1)提到ALFF是Sum of amplitudes of PSD,而源程序里ALFF貌似是Mean of amplitudes of PSD,应该以哪个为准?