The Smart Gene The human brain has approximately 100 billion nerve cells, or neurons that are linked in networks to give rise to a variety of mental and cognitive attributes, such as memory, intelligence, and personality. These networks include the nerve cells. At the synapse, information in the form of chemicals called neurotransmitters flows from the so-called presynaptic cell to the postsynaptic cell. These nerve cells become more tightly linked when stimulated by a series of …showed first 75 words of 2336 total…

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