Introduction to Biological Neural Network

 Introduction to Biological Neural Network

Biological Neuron has 3 parts as shown in figure 1.

  1.         Soma or cell body:- cell nucleus is located
  2.         Dendrites:- nerve connected to the cell body
  3.         Axon: carries impulses of the neuron
Axon end is further split into fine strands. Each strand terminates into a bulb-like organ called a synapse. Electric impulses are passed between the synapse and dendrites. 
Synapses are of two types
–        Inhibitory:- impulses hinder the firing of the receiving cell
–        Excitatory:- impulses cause the firing of the receiving cell
Neuron fires when the total weights to receive impulses exceed the threshold value during the latent summation period.
After carrying a pulse an axon fiber is in a state of complete nonexcitability for a specific time called the refractory period. 
Figure 1: Biological Neural Network



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