Sample-stimulus discriminability and sensitivity to reinforcement in delayed matching to sample.
Sample-stimulus discriminability and sensitivity to reinforcement in delayed matching to sample.
复制标题
样本延迟匹配中的样本刺激辨别力和对强化的敏感性。
DOI：
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发表时间：
1992
影响因子：
2.7
通讯作者：
K. White
中科院分区：
文献类型：
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作者：
B. M. Jones;K. White
五只鸽子被训练在红色和绿色刺激下的延迟匹配样本任务中。在每次实验中，样本刺激呈现和选择刺激的可用性之间的保留间隔在0.01 S和12 S之间变化。正确的红色和正确的绿色反应产生食物的概率因条件不同而不同。在四个不同的保留间隔测量了样本-刺激可区分性和反应偏差。这些分析的结果表明，样本刺激的可识别性与差异强化施加的控制之间存在交互作用。在较长的保留间隔，样品的辨别力降低，选择行为对红色/绿色增强剂比率变化的敏感度增加。据报道，在条件歧视中也有类似的关系，其中刺激的物理差异是不同的。这种对应关系表明，增加两个刺激之一呈现的延迟和有区别地对其做出反应的机会之间的延迟可能在功能上类似于增加两个刺激的物理相似性。
Five pigeons were trained in a delayed matching-to-sample task with red and green stimuli. The retention interval between sample-stimulus presentation and the availability of the choice stimuli was varied between 0.01 s and 12 s within each session. The probability of food produced by correct-red and correct-green responses was varied across conditions. Sample-stimulus discriminability and response bias were measured at four different retention intervals. The results of these analyses showed an interaction between the discriminability of the sample stimuli and the control exerted by differential reinforcement. At longer retention intervals, sample discriminability decreased and sensitivity of choice behavior to changes in the red/green reinforcer ratio increased. An analogous relation has been reported in conditional discriminations in which the physical disparity of stimuli has been varied. This correspondence suggests that increasing the delay between presentation of one of two stimuli and an opportunity to respond discriminatively to it may be functionally similar to increasing the physical similarity of the two stimuli.