# How is averaging used in calculating the Bereitschaftspotential?

I have a question about the averaging involved in the Bereitschaftspotential. On http://en.wikipedia.org/wiki/Bereitschaftspotential you can read that, because it is so small, the Bereitschaftspotential only becomes apparent after averaging.

My question: do they mean averaging over different electrodes, but in a single trial?

Or do they mean averaging over electrodes AND over trials?

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After reading more of the wiki page, I have found the answer in the Applications section: it can be detected from a single trial. –  Guest_______ Jun 13 at 7:00