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Recent genetic research comparing Neandertal DNA and modern human DNA supports the theory that Neandertals evolved into the European populations of anatomically modern humans.
Afterpotential
The transient change in membrane potential that occurs following a nerve impulse, affecting neuron excitability.
Depolarization
The process by which a cell's membrane potential becomes less negative, leading to an action potential in nerve and muscle cells.
Repolarization
The process by which a cell's membrane returns to its resting potential after depolarization.
Threshold
The minimum level of stimulus needed to activate a physiological response or sensation.
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