Circadian rhythm of responsiveness in crayfish visual units.
D000818:Animals; D003400:Astacoidea / Q000502:physiology*; D001683:Biological Clocks; D002940:Circadian Rhythm; D003623:Dark Adaptation; D003624:Darkness; D004596:Electroretinography; D008027:Light; D008465:Mechanoreceptors / Q000502:physiology; D008839:Microelectrodes; D009043:Motor Activity; D009900:Optic Nerve / Q000502:physiology*