Effects of reinforcer quality and step size on rats' performance under progressive ratio schedules
Effects of reinforcer quality and step size on rats' performance under progressive ratio schedules
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DOI：
10.1016/j.beproc.2008.02.001
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发表时间：
2008-06-01
影响因子：
1.3
通讯作者：
Aparicio, Carlos F.
中科院分区：
文献类型：
--
作者：
Covarrubias, Pablo;Aparicio, Carlos F.
加固的数学原理(MPR)模型准确地预测了在固定比例(FR)加固计划下的性能。本研究的目的是评估在不同步长(PR1或PR3)的累进比(PR)程序下，提供食物或糖精颗粒的大鼠进行MPR的一般性。结果表明，对糖精颗粒有反应的大鼠比对食物颗粒有反应的大鼠产生更高的断点(即完成率更高)。在理论参数方面，一个基于MPR的意外发现是，PR3时间表的a参数(比激活)更高。这一发现表明，特定的激活可能受到任务的运动参数的间接影响。(C)2008爱思唯尔B.V.保留所有权利。
The Mathematical Principles of Reinforcement (MPR) model accurately predicts performance in fixed ratio (FR) schedules of reinforcement. The aim of the present study was to assess the generality of MPR with rats responding under progressive ratio (PR) schedules of different step sizes (PR1 or PR3) that provided either food or saccharin pellets. The results showed that the rats responding for saccharin pellets produced higher breakpoints (i.e., completed higher ratios) than those responding for food pellets. In terms of theoretical parameters, one finding unanticipated on the basis of MPR was that the a parameter (specific activation) was higher for the PR3 schedules. This finding suggests that specific activation may be affected indirectly by motor parameters of the task. (c) 2008 Elsevier B.V. All rights reserved.