Around 50% of
neurons die because they have not receive life-sustaining signal from the postsynaptic
cell that is crucial to survive. These neurons die by apoptosis where biochemical
events lead to cell changes and programmed cell death. Those neurons that
survive during development find appropriate synaptic connections with other
postsynaptic cells and those neurons were produce by ventricular zone of the
brain who is capable of providing surplus of neurons.
