[FieldTrip] clustering of bipolar referenced data

[Stenner, Max-Philipp]

Hi all,

I would just like to confirm that I am not missing something. I am using cluster-based permutation stats for an intracranial dataset consisting of three bipolar channels. These are derived from four neighbouring contacts on the same electrode (i.e., channel 1 = contact 1 vs. contact 2, channel 2 = contact 2 vs. contact 3, etc.). For clustering in space, I've defined 2 to be a neighbour of 1 (and 3), and vice versa (etc. for the other channels). Since bipolar referencing means looking at differences between contacts, the fact that channels 1 and 2, for example, are partially derived from the same contact (contact 2), should not prevent me from clustering across these two channels when running stats - is that correct?

Thanks!

Best

Max