[Eeglablist] Re-referencing -- do I need to?

David Groppe dgroppe at cogsci.ucsd.edu
Thu Jul 15 20:20:47 PDT 2010


Hi Nick,
  I highly recommend reading the bit in Steve Luck's book on referencing:
http://mitpress.mit.edu/catalog/item/default.asp?ttype=2&tid=10677

It does a great job covering the pros and cons of different common
references (including the average reference and bimastoid).
The rest of the book is well worth reading too.
      -D


On Thu, Jul 15, 2010 at 11:24 AM, Nick Bedo <nickbedo at yahoo.com> wrote:
> Hi everyone,
>
> My recordings were referenced to both mastoids, but I don't have a channel
> that contains those data.  Is re-referencing advised/necessary in my case?
>  I was playing around with re-referencing to the average, and it really
> warps the waveform amplitudes compared to the ERPs calculated with our
> original methods.  Any input would be helpful.
> Thanks in advance,
> Nick
>
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