[Eeglablist] re-referencing offline with ActiCap
SarahCebulski at cmail.carleton.ca
Thu Jan 15 08:58:11 PST 2015
? Hi everyone,
I have collected data using ActiCap's 32 sensor cap and Actichamp amplifier. Data were referenced online to Tp9 (left mastoid), and saved this way. I am wondering: What is the best reference to use offline? Is it important that I use linked mastoids since the left mastoid was used online? If so, why is this the case? I am investigating alpha asymmetry, and have read that different references can significantly shift alpha power (for example, re-referencing to linked mastoids can shift EEG power in the alpha frequency band to right, frontal and superficial positions). For this reason, I would like to select my reference thoughtfully, and be able to defend this choice.
Any suggestions/insight would be much appreciated!
Cognitive Science, Carleton University
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