title: The hypothesis of sense-organ-dependent tonus mechanisms: history of a concept.
mesh_terms: D000818:Animals; D002490:Central Nervous System / Q000502:physiology; D007758:Ear, Inner / Q000502:physiology; D005399:Fishes; D007313:Insecta; D008959:Models, Neurological; D009043:Motor Activity; D009129:Muscle Tonus; D010775:Photic Stimulation; D012679:Sense Organs / Q000502:physiology*