Typically, neurons firing action potentials encode a signal's intensity by:

Typically, neurons firing action potentials encode a signal's intensity by:

Typically, neurons firing action potentials encode a signal's intensity by:




  1. changing the size of their action potentials.
  2. changing the frequency of their action potentials.
  3. firing at precise moments so as to signal different sized signals.
  4. sending signals of different sizes down different axonal branches.
  5. All of the above
Answer: 2