 The human brain is made up of an estimated 100 billion neurons. A neuron is basically one part that sends information (axon), one part that receives it (dendrite), and a long tube in the middle. A wave of ions sweeps through |
the tube, causing it to pass the information along to the next neuron. Many credible scientists believe that this complex chain of subtle chemical changes is the sole cause of a convincing illusion known as consciousness. Note: Not all neurons are quite so ickle, some neurons can be more than a foot long! DT |
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