Hi all,
We’re currently inclusively masking two
contrasts to find overlapping regions of activity. We do, however, want
to report parameter estimates that are not biased for either contrast. One
approach we’re trying is to take the coordinates of the voxel in between the
peak voxel of a cluster in contrast1 and that of the peak voxel in the same
cluster in contrast2. I’d like to extract the t-value of the “in-between”
coordinate in each contrast, but every time I enter in a user-specified voxel,
SPM will correct to and report the t-value of a nearby voxel. I was
wondering why this is happening and if there is another way to approach this.
I’ve already tried extracting all the t-values in each
contrast, but the “in-between” coordinates are not found in the
contrast at all.
Thank you!
Tracy H. Wang
Functional Neuroimaging of Memory Laboratory
Center for the Neurobiology of Learning and Memory
Department of Neurobiology and Behavior
http://fnim.bio.uci.edu