The relationship between food reward and satiation revisited.
标题 | The relationship between food reward and satiation revisited. |
文章类型 | Journal Article |
发表年度 | 2004 |
作者 | Sclafani, A., & Ackroff K. |
期刊 | Physiology & behavior |
卷 | 82 |
期 | 1 |
页码 | 89-95 |
发表日期 | 2004 Aug |
关键词 | Animals, Conditioning, Operant, Eating, Feeding Behavior, Food Preferences, Humans, Reward, Satiation, Stomach, 味觉生理, 嗅觉生理 |
摘要 | The postingestive satiating action of food is often viewed as producing a positive affective state that rewards eating. However, in an early test of this idea, Van Vort and Smith [Physiol. Behav. 30 (1983) 279] reported that rats did not learn to prefer a food that was "real-fed" and satiating over a food that was "sham-fed" and not satiating. Subsequent investigators obtained similar findings with concentrated nutrient sources. With dilute nutrient sources, however, rats learned to prefer the real-fed to the sham-fed food. These and other findings demonstrate that nutrients have rewarding postingestive effects that enhance food preferences via a conditioning process. These reward effects appear separate from the satiating actions of nutrients, which may actually reduce food reward. Food intake and preference are controlled by a complex interaction of positive and negative signals generated by nutrients in the mouth and at postingestive sites. |
Alternate Journal | Physiol. Behav. |