title: Mechanisms of plasticity and the tonic hypothesis.
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology*; D004558:Electric Stimulation; D005528:Foot / Q000502:physiology; D006185:Habituation, Psychophysiologic; D006801:Humans; D006815:Hunger; D007223:Infant; D012018:Reflex; D013649:Taste