Dear SPMlers,
while trying to understand more about the theoretical background of SPM I
often came across the use of the expression 'cluster' referring to the
spatial extent of an activation.
What kind of neighbourhood is used to define a cluster, i.e. do voxels
need to have a common area, a common edge or only a common corner to form
a cluster?
thanx in advance,
Stefanie Runde
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