Davis J D, Perez M C
Department of Psychology, University of Illinois, Chicago 60680.
Am J Physiol. 1993 Jan;264(1 Pt 2):R97-103. doi: 10.1152/ajpregu.1993.264.1.R97.
The effects of 17 h food deprivation and stimulation by five concentrations (0.05-0.8 M) of sucrose solutions on the licking behavior of rats were investigated. Food deprivation increased the intake of the three lowest concentrations (0.05, 0.1, and 0.2 M) but had no effect on the volume ingested of the two highest concentrations (0.4 and 0.8 M). Food deprivation had no significant effect on the duration of the meals of any of the sucrose solutions; rather it affected the rate of ingestion. In those cases where food deprivation did affect volume intake, it did so by increasing the initial rate of ingestion. Although food deprivation had no effect on the volume ingested of the two strongest concentrations of sucrose, it nevertheless affected the ingestive behavior by increasing the duration of the sustained periods of bursts of licking and decreasing their number. Deprivation also significantly decreased the rate of licking within these sustained bouts of licking. The results indicate that food deprivation can affect the ingestive behavior of rats in ways that are not revealed by measuring volumetric intake alone. The data also support the view that food deprivation increases the palatability of the test solutions.
研究了17小时食物剥夺以及五种浓度（0.05 - 0.8M）蔗糖溶液刺激对大鼠舔舐行为的影响。食物剥夺增加了三种最低浓度（0.05、0.1和0.2M）溶液的摄入量，但对两种最高浓度（0.4和0.8M）溶液的摄入量没有影响。食物剥夺对任何一种蔗糖溶液的进食持续时间均无显著影响；相反，它影响了摄取速率。在食物剥夺确实影响摄入量的情况下，是通过增加初始摄取速率来实现的。尽管食物剥夺对两种最高浓度蔗糖溶液的摄入量没有影响，但它通过增加持续舔舐爆发期的持续时间并减少其数量来影响摄取行为。剥夺还显著降低了这些持续舔舐回合中的舔舐速率。结果表明，食物剥夺能够以仅通过测量摄入量无法揭示的方式影响大鼠的摄取行为。数据还支持食物剥夺增加测试溶液适口性的观点。
