• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>other >Temporal Averaging Across Stimuli Signaling the Same or Different Reinforcing Outcomes in the Peak Procedure
【2h】

Temporal Averaging Across Stimuli Signaling the Same or Different Reinforcing Outcomes in the Peak Procedure

机译：整个刺激过程中的时间平均表明在峰值过程中相同或不同的强化结果

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present study examined factors that affect temporal averaging in rats when discriminative stimuli are compounded following separate training indicating the availability of reward after different fixed intervals (FI) on a peak procedure. One group of rats, Group Differential, learned that a flashing light stimulus signaled that one type of food pellet reward could be earned for lever pressing after an FI 5 s interval and that a second type of food pellet reward could be earned after an FI 20 s interval in the presence of a tone stimulus. A second group of rats, Group Non-Differential, was similarly trained except that both types of rewards were scheduled across flash and tone trials. When given non-reinforced flash + tone compound test trials the interval containing the maximal response rate was no different than on flash alone test trials, although some responding also appeared near the long FI time. After these FI contingencies were reversed (flash signaled FI 20 s and tone signaled FI 5 s), however, further compound test trials more clearly revealed a temporal averaging pattern in both groups. The peak interval was shifted to the right of the FI 5 stimulus. Moreover, Group Differential rats acquired the reversed discrimination somewhat more rapidly than Group Non-Differential rats, and in a final selective satiation test Group Differential rats responded less in later intervals after they had been sated on the FI 20 s reward. These data suggest that temporal averaging in stimulus compound tests occurs even when the stimuli being combined signal qualitatively different rewards, but that decreasing the value of one of those rewards can shift responding away from the relevant time interval in a selective satiation test. However, when an especially salient stimulus (e.g., flashing light) signals a short FI, rats tend to process the compound stimulus more in terms of its individual elements.
机译：本研究检查了在单独训练后复合区分性刺激时影响大鼠时间平均的因素，这些训练表明在峰值过程中不同固定间隔（FI）后奖励的可用性。一组大鼠（差分组）了解到，闪烁的光刺激表明，在FI 5 s间隔后按下操纵杆可获得一种食物团块奖励，而在FI 20之后可获得第二种食物团块奖励存在音调刺激的间隔。第二组大鼠，即非差异组，也接受了类似的训练，只是两种奖励类型都安排在闪光和语气试验中。当进行非增强的闪光+音调复合测试试验时，包含最大响应率的间隔与仅单独的闪光测试试验没有区别，尽管一些响应也出现在较长的FI时间附近。在反转这些FI突发事件（闪光信号FI 20 s和音调信号FI 5 s）之后，进一步的复合测试更加清楚地揭示了两组的时间平均模式。峰值间隔移至FI 5刺激的右侧。而且，差异组大鼠比非差异组大鼠更快地获得了反向歧视，并且在最终的选择性饱足试验中，差异组大鼠在接受FI 20 s奖励后，其反应间隔较小。这些数据表明，即使组合的刺激信号在质上具有不同的奖励，刺激复合测试中的时间平均也会发生，但是降低这些奖励之一的价值可以使选择性满足测试中的响应偏离相关的时间间隔。然而，当特别突出的刺激（例如，闪烁的光）发出短的FI信号时，大鼠倾向于就其单个要素更多地处理复合刺激。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号