[Freesurfer] key nSliceGroups unrecognized, line 11, skipping

2018-07-18 Thread Sarah Cole
External Email - Use Caution Hi, I know this is not an error but just a comment. But may I know what this means: "*key nSliceGroups unrecognized, line 11, skipping"* I tried to look for line 11 in matlab scripts but they are mainly commented out. Thank you, Sara _

[Freesurfer] FSFAST, Beta values and Percent Signal Change questions

2018-04-16 Thread Sarah Cole
Hi Doug, I need your recommendations on two topics. I really appreciate your help. 1.) I have two runs of the same experiment, each for about 12 minutes. These 2 runs are different only in the presentation order of the stimuli. I also have one localizer session which first, I calculated my contra

Re: [Freesurfer] Canonical HRF shape generated by FSFAST

2018-04-11 Thread Sarah Cole
Just one clarification, this is for first level analysis (individual subjects). Thanks On Wed, Apr 11, 2018 at 9:54 AM, Sarah Cole wrote: > Hi Doug, > > At the end of my FSFAST analysis, I would like to plot the Canonical HRF > shape generated by FSFAST for my events. I have found

[Freesurfer] Canonical HRF shape generated by FSFAST

2018-04-11 Thread Sarah Cole
Hi Doug, At the end of my FSFAST analysis, I would like to plot the Canonical HRF shape generated by FSFAST for my events. I have found this thread: https://mail.nmr.mgh.harvard.edu/pipermail/freesurfer/2013-July/031902.html but I am not sure if I understand this line: "plot(X.runflac(1).flac.ev(

Re: [Freesurfer] Percent Signal Change

2018-04-03 Thread Sarah Cole
eve wrote: > That does not get computed. You can do it in matlab with something like > > f = MRIread('f.nii.gz'); > > fmn = mean(f.vol,4); > > fmnrep = repmat(fmn,[1 1 1 size(f.vol,3)]);; > > s = f; > > s.vol = f.vol./fmnrep; > > MRIwrite(s,'percent

Re: [Freesurfer] Hemodynamic Lag Shift

2018-04-03 Thread Sarah Cole
Please ignore my previous post. I was wrong on so many levels! Thanks S On Fri, Mar 30, 2018 at 8:34 AM, Sarah Cole wrote: > Hi Doug, > > Sure. I have attached an excel sheet. > I have averaged the signal magnitude across 16 blocks of objects, and 16 > blocks of scenes, separat

Re: [Freesurfer] Hemodynamic Lag Shift

2018-03-30 Thread Sarah Cole
picture? the default > lag is TR/2 > > On 3/29/18 2:30 PM, Sarah Cole wrote: > > Thanks, Doug. > > I added (-4s) delay and plotted the data but I got the same delay as no > shift. Also I did (+4) delay and lost most of the activation. > > Do you have any recommendation

Re: [Freesurfer] Hemodynamic Lag Shift

2018-03-29 Thread Sarah Cole
in mkanalysis-sess > > doug > > > On 03/28/2018 05:35 PM, Sarah Cole wrote: > > Hi Doug, > > > > I have a block design experiment. After analyzing the data and > > plotting the response magnitude across the TRs, we see that there is a > > systematic lag in

[Freesurfer] Hemodynamic Lag Shift

2018-03-28 Thread Sarah Cole
Hi Doug, I have a block design experiment. After analyzing the data and plotting the response magnitude across the TRs, we see that there is a systematic lag in the response. For example, in a 16s block (TR=2s), at TR-1 and TR-2 the response goes down and then starts rising from TR-3. This is cons

[Freesurfer] Fwd: Freeview update on Mac

2018-02-28 Thread Sarah Cole
hanks, Sarah On Tue, Feb 27, 2018 at 11:40 AM, Hoopes, Andrew wrote: > Hi Sarah, I updated the wiki page. We actually just put up a standalone, > dev freeview app today. > > best > Andrew > > > On February 27, 2018 at 11:38:57 AM, Sarah Cole (coleashle...@gmail.com) > wrote:

[Freesurfer] Freeview update on Mac

2018-02-27 Thread Sarah Cole
Hi Doug/Zeke, Could you please update the page for freeview update on Mac- if it is available. https://surfer.nmr.mgh.harvard.edu/fswiki/UpdateFreeview Thanks, S ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.

Re: [Freesurfer] Creating ROI on the functional map

2018-02-27 Thread Sarah Cole
I apologize. I was wrong. Thanks, S On Mon, Feb 26, 2018 at 5:16 PM, Sarah Cole wrote: > It doesn't work on tksurfer. But it's ok. > > So Doug, is this the latest tutorial: https://surfer.nmr.mgh. > harvard.edu/fswiki/FsTutorial/MultiModalFmriIndividual_freeview for

Re: [Freesurfer] Creating ROI on the functional map

2018-02-26 Thread Sarah Cole
think it should still work > > > On 02/23/2018 05:16 PM, Sarah Cole wrote: > > Hi, > > > > I was wondering if this method is still applicable in version 6 > > https://surfer.nmr.mgh.harvard.edu/fswiki/CreatingROIs > > > > > > I cannot seem

[Freesurfer] Creating ROI on the functional map

2018-02-23 Thread Sarah Cole
Hi, I was wondering if this method is still applicable in version 6 https://surfer.nmr.mgh.harvard.edu/fswiki/CreatingROIs I cannot seem to find any of the options for creating an ROI. Thank you, S ___ Freesurfer mailing list Freesurfer@nmr.mgh.harva

Re: [Freesurfer] Goodness of fit

2018-02-20 Thread Sarah Cole
Great. Thank you very much. On Tue, Feb 20, 2018 at 11:19 AM, Douglas N Greve wrote: > I don't output a variance explained per se. You can get p-values > (sig=-log10(p)) and partial correlation coefficient (pcc) for a given > regressor or contrast > > > On 02/20/2018 12:

[Freesurfer] Goodness of fit

2018-02-20 Thread Sarah Cole
Hi Doug, I have used spmhrf 0 in my FS-FAST analysis. I was wondering if there is any way to check the variance explained and fits on the model? Thank you, -S ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu

Re: [Freesurfer] Percent Signal Change

2018-02-15 Thread Sarah Cole
s included for backwards compatibility. What do you mean by % signal > change? Do you want the raw waveform as a percent? > > > On 02/15/2018 01:52 PM, Sarah Cole wrote: > > Thank you, Doug. > > > > Sorry for not being clear. Could you please tell me what h.nii.gz and &

Re: [Freesurfer] Percent Signal Change

2018-02-15 Thread Sarah Cole
N Greve wrote: > It divides the contast (ces) by voxel-wise mean. I'm not sure I > understand your quesstion about h and h-offset > > > On 02/15/2018 01:04 PM, Sarah Cole wrote: > > Hi, > > > > Could someone please let me know how to get the percent sign

[Freesurfer] Percent Signal Change

2018-02-15 Thread Sarah Cole
Hi, Could someone please let me know how to get the percent signal change for raw signal intensity? I think the cespct.nii.gz gives me the contrast as %. However, I am not sure about dividing h.nii and h-offset.nii. What are they? Thank you ___ Freesu

[Freesurfer] FIR analysis

2018-02-12 Thread Sarah Cole
Hi experts, I was wondering if there is any tutorial or example on FIR analysis. I don't know where to start. I need to look at the time course of some voxels. I have a localizer session and the main experiment. I am intending to find the ROIs in the localizer scans and then extract their time co

[Freesurfer] V1 functional ROI

2018-02-09 Thread Sarah Cole
Dear Dr. Douge, I am a little bit confused about creating function ROI in V1. Basically, I have some localizers that for some ROIs I need to find activated neurons in a specific contrast in native space and then create that ROI and map it to my experimental scans and extract their voxel data. I

Re: [Freesurfer] shift to account for hemodynamic response

2018-02-09 Thread Sarah Cole
Thank you so much. On Fri, Feb 9, 2018 at 11:48 AM, Douglas Greve wrote: > It is already built into the HRF model. If you need to shift them more or > less than what is in the model, that can be accommodated. If you use the > -spmhrf option, then you will get the same HRF as is used in spm. > >