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Effects of ethanol on multiple fixed-interval fixed-ratio schedule performances: dynamic interactions at different fixed-ratio values.

机译:乙醇对多个固定间隔固定比率进度表性能的影响:不同固定比率值下的动态相互作用。

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摘要

Key pecking by three pigeons was maintained under a multiple fixed-interval fixed-ratio schedule of food presentation. The fixed-interval value remained at 3 minutes, while the fixed-ratio size was increased systematically in 30-response increments from 30 to either 120 (two pigeons) or 150 (one pigeon). At least two lower fixed-ratio values were also redetermined. The effects of ethanol (5 to 2.5 g/kg) were assessed at each of the different schedule parameters. Both overall and running response rates under the fixed-ratio schedule decreased with increases in the size of the fixed-ratio schedule; pause duration under the fixed-ratio schedule was directly related to increases in fixed-ratio size. Overall and running rates of responding under the fixed-interval schedule changed little with increases in the size of the fixed-ratio schedule. Despite the relative invariance of fixed-interval responding across the different fixed-ratio values, the effects of ethanol on responding under the fixed-interval schedule differed depending on the size of the fixed-ratio schedule. Greater increases occurred in both overall and in lower local rates of responding under the fixed-interval schedule when the fixed-ratio value was 120 or 150. The effects of ethanol on responding under the fixed-ratio schedule also depended on the size of the fixed ratio. Increases in responding under the fixed-ratio schedule were typically greater at the higher fixed-ratio values where response rates were lower. When the effects of ethanol were redetermined at the lower fixed-ratio parameter values, rates and patterns of responding were comparable to those obtained initially. However, the dose-effect curves for responding under both fixed-ratio and fixed-interval schedules were shifted up and to the right of those determined during the ascending series. The effects of ethanol can depend on rate or responding, behavioral history, and the context in which behavior occurs.
机译:三只鸽子的关键啄食是按照多个固定间隔固定比例的食物展示计划进行的。固定间隔值保持在3分钟,而固定比例大小则以30响应的增量从30逐渐增加到120(两只鸽子)或150(一只鸽子)。还重新确定了至少两个较低的固定比率值。在每个不同的时间表参数中评估了乙醇(5-2.5 g / kg)的作用。固定比率时间表的总体响应率和运行响应率都随着固定比率时间表的大小的增加而降低;固定比率时间表下的暂停时间与固定比率大小的增加直接相关。固定间隔时间表下的总体响应速度和运行速率随固定比率时间表的大小增加而变化不大。尽管固定间隔响应在不同的固定比率值上相对不变,但是乙醇对固定间隔日程表下响应的影响取决于固定比率日程表的大小。当固定比率值为120或150时,在固定时间间隔计划下,总体响应速度和局部响应率较低的地方都有较大的增加。在固定比率计划下,乙醇对响应的影响还取决于固定比率的大小。比。在固定比率时间表下,响应速度的增加通常在较高的固定比率值(响应率较低)下更大。当在较低的固定比率参数值下重新确定乙醇的作用时,响应的速率和模式与最初获得的相当。但是,在固定比例和固定间隔时间表下响应的剂量效应曲线在上移序列中向上移动并向右移动。乙醇的影响取决于速率或反应速度,行为历史以及行为发生的环境。

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  • 作者

    Barrett, J E; Stanley, J A;

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  • 年度 1980
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  • 正文语种 en
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