The working principles of ANNs are inspired by how a human brain works, depicted in Figure 7. The receptors receive the stimuli either internally or from the external world; then they pass the information into the biological neurons for further processing. There are a number of dendrites, in addition to another long extension called the axon.
Towards its extremity, there are minuscule structures called synaptic terminals, used to connect one neuron to the dendrites of other neurons. Biological neurons receive short electrical impulses called signals from other neurons, and in response, they trigger their own signals: