Mar 13, 2010
In his book titled Addiction and Grace, Dr Gerald G. May M.D. writes..
No one knows for certain how many neurons exist within the normal human brain; they are literally uncountable. The best estimates range from ten billion to one trillion. We do know that neurons begin to form early in fetal life, and that by the tenth week of gestation they are multiplying at enormous speeds. Since all the neurons of the brain are formed by the time of birth, they must develop at a rate at least 150 per second throughout the nine months of pregnancy.
Dr May further writes that the average neuron has between twenty thousand and two hundred thousand connections, called synapses, with other cells. He then goes on to say that a computer counting these connections at a thousand per second would take between ten and fifteen thousand years to log the number in one human brain.
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