McMillan D E
J Exp Anal Behav. 1979 Nov;32(3):445-56. doi: 10.1901/jeab.1979.32-445.
The effects of d-amphetamine and caffeine were studied on rates and patterns of lever pressing and schedule-induced licking under fixed-interval schedules of food pellet presentation. In addition, the effects of caffeine were studied on lever pressing and licking under a multiple fixed-ratio fixed-interval schedule. Caffeine reduced mean overall rates of licking at lower doses than it reduced mean overall rates of pressing under the fixed-interval schedules, but the effects of caffeine on both licking and lever pressing depended largely on the control rate of responding. d-Amphetamine reduced mean overall rates of lever pressing and licking at about the same dose, but the effects of d-amphetamine also were a function of the control rate of responding.
研究了右旋苯丙胺和咖啡因对在固定间隔食物颗粒呈现时间表下杠杆按压速率和模式以及定时诱导舔舐的影响。此外，还研究了咖啡因对多重固定比率固定间隔时间表下杠杆按压和舔舐的影响。在固定间隔时间表下，咖啡因降低舔舐平均总体速率的剂量低于降低按压平均总体速率的剂量，但咖啡因对舔舐和杠杆按压的影响在很大程度上取决于反应的对照速率。右旋苯丙胺在大约相同剂量下降低杠杆按压和舔舐的平均总体速率，但右旋苯丙胺的影响也是反应对照速率的函数。
