Hi - what this means depends on the HRF model you've used. As described
briefly at http://www.fmrib.ox.ac.uk/fsl/feat5/detail.html#tsplot for each
contrast, at the peak voxel, you get time series plots of all data
together over all repeats of the event, along with the partial and full
model fits, again averaged, which tells you about the HRF (depending on
what HRF convolution model you've used in FEAT).
On Tue, 6 Jul 2004, Julius Fridriksson wrote:
> Steve -- Sorry to bug you with this again. I get it from your previous
> reply to 'Robin' how you can get the data for a ROI. I guess my
> question is more basic: How do you actually estimate the mean HRF in a
> give voxel? Again, thanks for your help -- Julius
> Julius Fridriksson Ph.D.
> Assistant Professor
> Dept. of Communication Sciences & Disorders
> University of South Carolina
> Tel: (803) 777-5931
> Fax: (803) 777-3081
> >>> [log in to unmask] 07/05/04 22:10 PM >>>
> 1. Hopefully is answered at:
> 2. Assuming that you already ran FEAT including registration to highres
> and standard space, you can use the FEAT->Utils->Feat highres stats
> rendering tool.
> Cheers, Steve.
> On Mon, 5 Jul 2004, Julius Fridriksson wrote:
> > Greetings FSLers -- I have two basic questions regardsing FEAT and
> > FLIRT, respectively:
> > 1. Can I use FSL to estimate and display the HRF in a ROI? I would
> > to compare the time to peak between the left and right motor
> > (we used an event related design).
> > 2. How can I register my zstat map on a high res image without loosing
> > the resolution of the hig res?
> > Thanks very much,
> > Julius Fridriksson Ph.D.
> > Assistant Professor
> > Dept. of Communication Sciences & Disorders
> > University of South Carolina
> > Tel: (803) 777-5931
> > Fax: (803) 777-3081
> Stephen M. Smith DPhil
> Associate Director, FMRIB and Analysis Research Coordinator
> Oxford University Centre for Functional MRI of the Brain
> John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
> +44 (0) 1865 222726 (fax 222717)
> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve
Stephen M. Smith DPhil
Associate Director, FMRIB and Analysis Research Coordinator
Oxford University Centre for Functional MRI of the Brain
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve