What sorts of signals does the brain use to communicate sensations, thoughts and actions?

Question: What sorts of signals does the brain use to communicate sensations, thoughts and actions?
- Keywords:
  action,
  brain,
  sensation,
  signal,
  thought
Asked by Albie to Ashley, Bernard, Carsten, MariaMagdalena, Monique on 6 Nov 2015. This question was also asked by 879tntd28.
- Ashley Hughes answered on 6 Nov 2015:
  
  These are all conducted through electrical pulses, we can detect these externally which is how people can ‘read’ brain activity in patients. I’m sure the subject is a bit more complex than that, but generally electricity is how movements and thoughts are signaled… to the best of my knowledge

Question: What sorts of signals does the brain use to communicate sensations, thoughts and actions?