[Eeglablist] EEG ground

[Michele Barsotti]

Dear EEG experts,
 I would like to acquire some datasets for investigating a potential
located in the frontal medial line (like the Error Related potential, e.g.
ErrP and ERN) and I'm doubtful about the ground position.
I always locate the "reference" electrode on the ear lobe with a clip and
the ground in the Cz electrode. But, in this case, I want to check the
presence of a potential  located in the midline frontal and I think that
the ground on Cz isn't the best solution.

Some experimenters use forehead ground to investigate the ErrP and other
ones use the mastoid ground.
I've got a maximum of 32 electrodes (I'm specifying this for the common
average reference issues).

Can anyone suggests me what is the best ground location?

Thanks in advance


-- 
        -Michele-
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