I made a Vine taking the same video and manually adding a timer.
  I proved, to my satisfaction, the N400 neurological negative
  spike, as well as a possibility that the P300 is also true. As
  I'm a total amateur in the realm of cognitive psychology (or is
  that computational psychology? I dunno)... I'm fascinated by
  that time-scale, so it was a pleasure to be able to forensically
  analyze my own reaction time. I just... hope I don't have it
  happen again, 'cause I don't like lightening
  https://vine.co/v/epA6ZtZ2xa7