Trajectory analysis by a crayfish proprioceptor: receptor muscle activity may determine a velocity reference point.
D000818:Animals; D003400:Astacoidea; D008465:Mechanoreceptors / Q000502:physiology*; D009043:Motor Activity; D009046:Motor Neurons / Q000502:physiology; D009068:Movement; D009132:Muscles / Q000294:innervation*; D009474:Neurons / Q000502:physiology*