Examlex
__________ is a brain-imaging method that takes computer-controlled X-rays of the brain.
Action Potential
A momentary change in electrical potential on the surface of a neuron that occurs when it is stimulated and is capable of transmitting a signal along the neuron.
Millivolts
A unit of electric potential equal to one thousandth of a volt.
Relative Refractory Period
A phase following immediate action where a neuron is less responsive to stimulation and requires a stronger than normal impulse to activate.
Sodium
A chemical element (Na) that is a highly reactive metal and an essential nutrient for human health, particularly in nerve function and fluid balance.
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