The Biological Neuron
The human brain contains approximately 1011 neurons.
Inputs are transmitted electrochemically across the input synapses
Input potentials are summed.
If the potential reaches a threshold, a pulse or action potential moves down the axon. (The neuron has “fired”.)
The pulse is distributed at the axonal arborization to the input synapses of other neurons.
After firing, there is a refractory period of inactivity.