Bacotti A V
J Exp Anal Behav. 1979 Jan;31(1):141-58. doi: 10.1901/jeab.1979.31-141.
The effects of pentobarbital and d-amphetamine were studied in pigeons responding under several concurrent fixed-ratio variable-interval and concurrent fixed-ratio fixed-interval schedules of food presentation. Drug effects were compared with different fixed ratios, fixed and variable intervals, changeover delays, and with the schedules operating singly. Doses of d-amphetamine that increased or did not affect responding under the interval schedules decreased responding under the fixed-ratio schedule, whereas doses of pentobarbital that increased responding under the fixed-ratio schedule decreased or eliminated responding under the interval schedules. These effects depended both on the schedule of food delivery and the parameters of schedules arranged concurrently. Pentobarbital increased responding under the fixed-ratio schedule with 4-minute and 10-minute interval schedules arranged concurrently, but not with 1.5-minute schedules. d-Amphetamine decreased concurrent ratio and interval responding with the 1.5-minute interval schedules, but either increased or did not affect responding with the longer intervals. Changes in the parameter of one schedule altered responding controlled by that schedule and also other concurrent performances. As a consequence, the effects of drugs on each behavior were altered.
在几种同时呈现食物的固定比率可变间隔和固定比率固定间隔程序下，对鸽子的反应进行了戊巴比妥和右旋苯丙胺作用的研究。将药物作用与不同的固定比率、固定和可变间隔、转换延迟以及单独运行的程序进行了比较。在间隔程序下增加或不影响反应的右旋苯丙胺剂量，在固定比率程序下会降低反应，而在固定比率程序下增加反应的戊巴比妥剂量，在间隔程序下会降低或消除反应。这些作用既取决于食物呈现程序，也取决于同时安排的程序参数。戊巴比妥在同时安排4分钟和10分钟间隔程序的固定比率程序下增加反应，但在1.5分钟程序下则不然。右旋苯丙胺在1.5分钟间隔程序下降低了同时进行的比率和间隔反应，但在较长间隔下则增加或不影响反应。一个程序参数的变化改变了该程序控制的反应以及其他同时进行的行为表现。因此，药物对每种行为的作用也发生了改变。
