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Figure 2. Biological neurons and artificial neuron model for neuromorphic computing. (A) Components of biological neurons; (B) Synapse as the site of transmission of electric and chemical signals between two neurons; (C) Membrane potential changes and the generation of action potential; (D) Circuit diagram of a LIF model, implemented using a capacitor, resistor, and TS; (E) HH model. The membrane potential (V_m) of the circuit is determined by the conductance of variable resistors that represent ion channels. LIF: Leaky integrate and fire; TS: threshold switch; HH: Hodgkin-Huxley.