spatial clustering

[Sameer Walawalkar]

Hello,

I am using clusterandanalysis  to detect coherence differences and wonder
how the spatial adjacency of sensors is determined. Am I right in
understanding that given an MEG (e.g. Neuromag 306) since the exact layout
is known, one can determine the nearest neighbours for each sensor simply
by looking up the layout?

So for example, if a squid 20.2 shows a significant effect, its nearest
neighbours from the layout are 18.3, 22.4, 22.2, 23.1, 20.3, 20.4, 20.1.
If I use cfg.minnbchan = 2, the clustering algorithm will look to see if
atleast two of the neighbours given above also show a significant effect
for a cluster to be determined.
Is this what is implemented in clusterandanalysis?

Thank you very much for your time,

best,
sameer

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