What kind of signal travels along a neuron?

A neuron transmits signals in the form of electrical impulses known as action potentials. These action potentials are generated by the movement of ions across the neuron's membrane, leading to a rapid change in voltage. Once initiated, the signal travels down the axon to the axon terminals, where it can trigger the release of neurotransmitters to communicate with other neurons. This process enables the rapid transmission of information within the nervous system.