Habituation may contribute to within-session decreases in responding under high-rate schedules of reinforcement
Habituation may contribute to within-session decreases in responding under high-rate schedules of reinforcement
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DOI：
10.3758/bf03192817
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发表时间：
2001-02-01
期刊：
影响因子：
--
通讯作者：
McSweeney, FK
中科院分区：
文献类型：
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作者：
Aoyama, K;McSweeney, FK
两个实验验证了这一假设，即习惯化有助于在会话内减少响应。在实验1中，在整个基线阶段，大鼠的按压在固定比率（FR）4的时间表下得到加强。在disabituation会议期间，第一个21分钟和最后21分钟是FR 4; disabituating事件发生在中间3分钟。disabituating事件改变的方式，以四种不同的方式提供的mancer。在所有令人沮丧的事件后，反应率都有所增加。在实验2中，大鼠对几个FR和可变比率（VR）的时间表。比例要求从3到15不等。在会议期间下降的反应是陡峭的FR时间表比VR时间表。此外，反应率被很好地描述为在会话内吃的食物颗粒的累积数量的线性函数。这些结果支持习惯化假说，但不排除其他饱腹感变量可能同时起作用的可能性。
Two experiments tested the hypothesis that habituation contributes to within-session decreases in responding. In Experiment 1, rats' leverpressing was reinforced under a fixed ratio (FR)4 schedule throughout the baseline sessions. During the dishabituation sessions, the first 21 min and the last 21 min were FR 4; dishabituating events occurred during the middle 3 min. The dishabituating events altered the manner of reinforcer delivery in four different ways. Response rates increased after all dishabituating events. In Experiment 2, rats responded on several FR and variable ratio (VR) schedules. The ratio requirement varied from 3 to 15. Within-session decreases in responding were steeper during FR schedules than during VR schedules. In addition, response rates were well described as linear functions of cumulative number of food pellets eaten within sessions. These results support the habituation hypothesis but do not rule out the possibility that other satiety variables might contribute simultaneously.