Fig. 3.

A block diagram of a single neuron model. A basic neuron contains three things: weight and delay, input spike activation function. The activation function take decision of output depended on the sum of all product terms, and this product depends on input and initial weights. The spike output is generated by a binary output 0 when the membrane voltage is below the threshold and 1 when it is above it. This signal is fed to the output register and is combined with the refractory control signal to ensure that the threshold is passed and an output spike is signalled. After that, the neuron membrane voltage is restored to its reset value