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.
>
>
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
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
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
___
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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
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
&
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
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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:
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
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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
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
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
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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:
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
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
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
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
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
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(
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
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
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
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