Lecture 10-Initiation, Propagation and Further Transmission of a Nerve Impulse-1831-Spring 2022

The process of nerve impulse transmission can be divided into three main phases: initiation, propagation, and further transmission.

• Initiation: This phase begins when a stimulus causes a change in the membrane potential, leading to depolarization.

• Propagation: Once initiated, the impulse travels along the axon through a series of action potentials, facilitated by the opening and closing of voltage-gated ion channels.

• Further Transmission: Upon reaching the axon terminals, neurotransmitters are released into the synaptic cleft, allowing the signal to be transmitted to the next neuron.