Dear Silvia,
It sounds to me that you have done a study with anatomical hypotheses
("typically involved in the disease") and that the reviewer therefore
wants you to sample t/z images for those regions of interest - you could
do that with SPM's VOI facility if you have ROIs in an image format, or
with non-SPM software like Analyze or MRIcro.
It does not sound to me that s/he wants you to sample t/z scores within
clusters (that would be rather circular in most situations anyway).
Good luck,
Alexander
-----Original Message-----
From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]]
On Behalf Of silviamorbelli
Sent: 23 May 2007 16:10
To: [log in to unmask]
Subject: Re: [SPM] unthresholded maps
Dear Anderson,
Thanks a lot for your precious answer. I found the con*.img and hdr in
the working directory of my SPM statistics. Moreover I read carefully
the paper from Jernigan et al. which is very informative indeed and that
I already had noticed. However, what I was unable to undesrtand is how
to obtain (or to find out) the correspondent Z-scores values for the
voxels/clusters of these con*.img maps.
Please, could you help me again?
Really many, many thanks...
best
Silvia
For your convenience, I enclose you here the request of the referee :
"Results should also be presented in terms of z-score (T-score) averaged
on unthresholded contrast image for regions of interest that are
typically involved in the disease (disallow F and T thresholds in SPM
for this). Furthermore the z-scores image should be also presented
unthresholded (to create them, again disallow statistical threshold in
SPM)".
---------- Initial Header -----------
From : "SPM (Statistical Parametric Mapping)" [log in to unmask]
To : [log in to unmask]
Cc :
Date : Thu, 17 May 2007 16:40:19 +0100
Subject : Re: [SPM] unthresholded maps
> Dear Silvia,
>
> Just open the contrast images generated by SPM, i. e. the files named
> con*.hdr+img. They should be the unthresholded maps that your reviewer
is
> asking to see.
> A very good paper on the advantages of unthresholded maps is Jernigan
et al
> (2003), Hum Brain Mapp 19:90-95. Have a look at it.
>
> Anderson
>
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