What is the high-speed signals that pass along axons of nerve cells called?

The high-speed signals that pass along axons of nerve cells are called action potentials. They are brief electrical pulses that travel along the axon, transmitting information from one part of the neuron to another. Action potentials are generated when the neuron receives a strong enough stimulus, causing the membrane potential to reach a threshold value. This triggers a chain of events that leads to the opening of sodium channels in the membrane, allowing sodium ions to flow into the neuron and reversing the membrane potential. This depolarization wave then travels along the axon, causing the opening of more sodium channels and the continued propagation of the action potential.