The neurophysiology of motivation.
D000818:Animals; D001921:Brain / Q000502:physiology*; D003463:Cues; D004644:Emotions; D006801:Humans; D008636:Mesencephalon / Q000502:physiology; D009042:Motivation; D009069:Movement Disorders; D009155:Mutism; D010465:Perception; D013045:Species Specificity; D014562:Caudata / Q000502:physiology