![]() ![]() But the new method may put the mapping of these connections within scientists' grasp. ![]() ![]() 18 in Neuron.īecause synapses are so minute and packed so closely together, it has been hard to get a handle on the complex neuronal circuits that do our thinking, feeling and activation of movement. One neuron may make as many as tens of thousands of synaptic contacts with other neurons, said Stephen Smith, PhD, professor of molecular and cellular physiology and senior author of a paper describing the study, to be published Nov. It is at these synapses that an electrical impulse traveling along one neuron is relayed to another, either enhancing or inhibiting the likelihood that the second nerve will fire an impulse of its own. A typical healthy human brain contains about 200 billion nerve cells, or neurons, linked to one another via hundreds of trillions of tiny contacts called synapses. ![]()
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