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?
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Asked by 459newg33 to Louise, Brian on 16 Nov 2016.
- Louise Mc Grath answered on 16 Nov 2016:
  
  Hey!
  
  Well your brain is made up of millions of things called neurons. These neurons send electrochemical signals to anywhere and everywhere in the body and this helps control our muscles so we can move (and lots of other things!). Think of neurons like the gates and wires in a computer.
  
  Electrochemical signals are something like what I study. It is a nice mix of electrical and chemical signals! So a combination of electricity and chemistry which is pretty awesome!!
  
  Louise =)

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