Within-session response rate in rats decreases as a function of amount eaten
Within-session response rate in rats decreases as a function of amount eaten
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DOI：
10.1016/s0031-9384(98)00118-8
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发表时间：
1998-07-01
影响因子：
2.9
通讯作者：
Aoyama, K
中科院分区：
文献类型：
--
作者：
Aoyama, K
在以往的研究中，大鼠摄食行为的时段内变化通常被视为时间的函数。本研究的目的是描述会话内减少的操作性反应作为一个功能的累积量的食物摄入量。训练大鼠（n = 8）通过挤压反应获得食物颗粒。观察到以下结果：1）CRF方案期间的应答率被很好地描述为食物颗粒累积量的线性函数; 2）线性方程在描述半VI方案期间的应答率时也是准确的;和3）即使强化时间表在单个会话内改变，每个强化方案中的反应率被很好地描述为累积食物摄入量的线性函数。因此，反应率随食物摄入量的增加而成比例下降。(C)1998年爱思唯尔科学公司
In past studies, within-session changes of rat feeding behavior were always treated as functions of time. This study aimed to describe the within-session decreases of operant response as a function of cumulative amount of food intake. Rats (n = 8) were trained to obtain food pellets by lever-press responses. Session lengths were 45 min. The following results were observed: 1) Response rates during a CRF schedule were well described as a linear function of cumulative amount of food pellets eaten; 2) The linear equation was also accurate in describing the response rates during a semi-VI schedule; and 3) Even if schedules of reinforcement were changed within a single session, response rates in each reinforcement schedule were well described as linear functions of cumulative food intake. Thus, response rates decreased proportionally to the increase in cumulative amount of food intake. (C) 1998 Elsevier Science Inc.