The Neuron - Electrophysiology Of

: Voltage-gated sodium channels snap open, allowing Na+cap N a raised to the positive power to flood into the cell, making it more positive.

This process is "all-or-nothing"—the signal doesn't get "stronger" with more stimulus; instead, the neuron fires more frequently . How We Study the Brain's Electricity Electrophysiology of the Neuron

: The voltage briefly dips below the resting level before stabilizing. : Voltage-gated sodium channels snap open, allowing Na+cap