title: Laser interferometer measurement of changes in crayfish axon diameter concurrent with action potential.
abstract: Small rapid changes in the diameter of an axon takes place when an action potential progresses along the axon. In the giant axon of the crayfish these occur within a period of about 1 millisecond and are typically about 18 angstroms in total amplitude.
mesh_terms: D000200:Action Potentials; D000818:Animals; D003400:Astacoidea; D001369:Axons / Q000502:physiology / Q000648:ultrastructure*; D007834:Lasers; D055095:Optics and Photonics / Q000295:instrumentation