The perception of hunger.
D000328:Adult; D000818:Animals; D005260:Female; D005769:Gastrointestinal Motility; D006801:Humans; D006815:Hunger; D007858:Learning; D008297:Male; D009119:Muscle Contraction; D009765:Obesity; D009771:Obsessive-Compulsive Disorder; D010465:Perception; D012737:Sex Factors