1 Roadmap for Quality Measurement in the Traditional Medicare Fee-for-Service Program [PDF, 3MB]. 2  Roadmap for Implementing Value Driven Healthcare in the Traditional Medicare Fee-for-Service Program [PDF, 3MB]. 3  Medicare Resource Use Measurement Plan [PDF, 3MB].
When a nerve signal, or impulse, reaches the ends of its axon, it has traveled as an action potential, or a pulse of electricity. However, there is no cellular continuity between one neuron and the next; there is a gap called synapse.
The two neurons are separated by the synaptic cleft, a microscopic gap between the terminal button of one neuron and the cell membrane of another neuron. Signals have to cross this gap for neurons to communicate. The neural impulse is a signal that must be transmitted from a neuron to other cells.