Examlex
Research evidence has found that expert performance on tasks tends to peak by ________, and drop off slightly after that.
Ligand-Gated Sodium Channels
Ion channels in cell membranes that open or close in response to the binding of a chemical signal (ligand), specifically allowing sodium ions to pass through.
Membrane Receptor
A specialized protein molecule embedded in the cell membrane that can interact with specific molecules, starting a chain of cell responses.
Depolarization
The process in which a cell's membrane potential becomes less negative, moving towards zero, which is critical in the initiation of action potentials.
Threshold Stimulus
Stimulus resulting in a local potential just large enough to reach threshold and produce an action potential.
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