fmcpr.mcdat are the motion estimates (mm and degrees). mcprextreg is the
motion correction parameters after analysis using a PCA, which is why
there is such a huge difference. By default we use the top 4 components.
doug
On 5/28/13 8:28 PM, Joseph Dien wrote:
I have a follow-up question for
Either fmcpr.mcdat or fmc.mcdat
On 09/13/2012 02:07 PM, New Fei Ho wrote:
> Hi Doug,
>
> Can you point out the name of file that I should be looking at?
>
> I assumed they were either the mcextreg and mcprextreg output files, but
> these only have 6 columns.
>
> Thanks,
> New Fei
>
>> Hi New Fei,
Hi Doug,
Can you point out the name of file that I should be looking at?
I assumed they were either the mcextreg and mcprextreg output files, but
these only have 6 columns.
Thanks,
New Fei
> Hi New Fei, I did some digging and found the docs for the output (pasted
> below). Translations (displac
Hi New Fei, I did some digging and found the docs for the output (pasted
below). Translations (displacement) are in mm, rotations are in degrees
doug
1. n : time point
2. roll : rotation about the I-S axis (degrees CCW)
3. pitch : rotation about the R-L axis (degrees CCW)
4. ya
If by XYZ you mean column, row, slice, then yes. The values are with
respect to the middle time point (or whatever you used as the template),
it is not the relative difference.
doug
On 09/12/2012 05:37 PM, New Fei Ho wrote:
> Hi,
>
> I would like to compare the mean head motion between two group
Hi,
I would like to compare the mean head motion between two groups.
Just to clarify the values found in the mcprextreg file:
1. Do the six columns represent translationX, translationY, translationZ
and rotationX, rotationY, rotationZ?
2. Are the values found in each time-point (i) absolute, i.e
