A considerable amount of work has been carried out on the biology of learning and memory acquisition, and retention [1-6]; however, little is known regarding how the information is written in the brain [7-9]. It is notable that in the Neuron Theory postulated by Santiago Ramón y Cajal [10], neurons were conceived to form a contiguous instead of a continuous structure. They were physically separated but could function through their connections by synapses [11]. The electric impulses are initiated by the presynaptic neurons and transmitted through a synapse to the postsynaptic neuron, and they then travel toward the axon. A considerable amount of work on the molecular and cellular mechanisms has been undertaken in this fast-evolving field [11-16].
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