Reid A K, Staddon J E
Department of Mathematics and Computer Science, Eastern Oregon State College, La Grande 97850.
J Exp Anal Behav. 1987 Sep;48(2):289-301. doi: 10.1901/jeab.1987.48-289.
As a control for the effects of session duration and hunger on the relation between food magnitude and induced drinking, four food-deprived rats were exposed to a variable-time 50-s schedule of food delivery in which the size of each food delivery varied randomly within sessions. Food-related behavior and schedule-induced drinking per opportunity were examined as functions of meal size and postfood time. All rats showed an inverted-U-shaped relation between drinking per opportunity and meal size. This relation was caused by variation in the percentage of intervals that contained drinking and by variation in the number of drinking bouts per interval, rather than by bout duration or by the amount of drinking within those intervals that actually contained drinking. Head-in-feeder time increased linearly with meal size. Schedule-induced drinking was entrained by food delivery in 3 of 4 subjects; the entrainment was due to regulation of the starting time of each drinking bout rather than to regulation of bout duration.
作为对实验时长和饥饿对食物量与诱发饮水之间关系影响的对照，四只食物剥夺大鼠被置于一个可变时距50秒的食物投递程序中，每次食物投递的量在各实验时段内随机变化。将与食物相关的行为和每次机会的程序诱发饮水作为进食量和进食后时间的函数进行检验。所有大鼠每次机会的饮水与进食量之间呈现倒U形关系。这种关系是由包含饮水的间隔百分比变化以及每个间隔内饮水发作次数的变化引起的，而非由发作时长或那些实际包含饮水的间隔内的饮水总量引起。探头入食器时间随进食量呈线性增加。4只大鼠中有3只的程序诱发饮水被食物投递所夹带；这种夹带是由于对每次饮水发作起始时间的调节，而非发作时长的调节。
