Axon initial segment
= Axon initial segment
The axon initial segment is the specialized proximal region of an <axon> near the <soma>. In many <neurons>, its <voltage-gated ion channels> make it the site where an <action potential> begins. <Neuronal Dynamics: From Single Neurons to Networks and Models of Cognition by Wulfram Gerstner and others/1.1 Elements of Neuronal Systems>{ref}