• Question: what is the electricity measured in? like volts?

    Asked by verygood to Tim on 24 Jun 2011.
    • Photo: Tim Fosker

      Tim Fosker answered on 24 Jun 2011:

      Hi @verygood

      Thanks for a great question!

      It is measured in microvolts. The electricity from the brain as it is measured over the head is very small and we have to use an amplifier to make the brain activity big enough to record.

      You can read more about it here: http://ias.im/58.378