Re: [Freesurfer] Selxavg3 sets high activation to zero

2011-12-22 Thread Qi Zhu
Ok, that's great. Thanks very much for your help. Best wishes and Merry Christmas! Qi Zhu, PostDoc Laboratorium voor Neuro- en Psychofysiologie K.U.Leuven Medical School Herestraat 49, B-3000 Leuven (Belgium) On Wed, Dec 21, 2011 at 7:40 PM, Douglas N Greve wrote: > Yes that is corre

Re: [Freesurfer] Selxavg3 sets high activation to zero

2011-12-21 Thread Qi Zhu
is calculated from the p value that came from the Ftest. So the t value is calculated wrong in fs 5.0. I am now changing this line to: Fvol = fast_mat2vol(Fmat,mri.volsize); t.vol = sqrt(Fvol).*sign(ces.vol); Is this correct? Best, Qi Zhu, PostDoc Laboratorium voor Neuro- en Psychofysiologie

Re: [Freesurfer] Selxavg3 sets high activation to zero

2011-12-21 Thread Qi Zhu
e F values. Is that correct? Best, Qi Zhu, PostDoc Laboratorium voor Neuro- en Psychofysiologie K.U.Leuven Medical School Herestraat 49, B-3000 Leuven (Belgium) phone +32 16 33 02 09 On Tue, Dec 20, 2011 at 8:54 PM, Douglas N Greve wrote: > I think this is due to the high DOF and probably

[Freesurfer] ROI-based fixed effect analysis

2011-03-29 Thread Qi Zhu
data defined ROI to get those values? And how to average the gammavar values in a ROI? Just mean(gammavar), or sqrt(mean(gammavar^2))? Thanks very much for the answers. regards, Qi Zhu Laboratorium voor Neuro- en Psychofysiologie K.U.Leuven Medical School