Determinants of phrasing effects in rat serial pattern learning.
Determinants of phrasing effects in rat serial pattern learning.
复制标题
大鼠序列模式学习中措辞效果的决定因素。
DOI：
10.1007/s10071-007-0110-7
复制
发表时间：
2008
期刊：
影响因子：
2.7
通讯作者：
Fountain,StephenB
中科院分区：
文献类型：
--
作者：
Wallace,DouglasG;Rowan,JamesD;Fountain,StephenB
两个实验研究了短暂停顿引入序列模式作为措辞线索如何影响大鼠的模式学习。在实验1中，一个24元素的图案由8个3元素的组块组成，而一个20元素的图案由4个5元素的组块组成。在这两种模式中，3.0秒的时间暂停放置在块边界（同步措辞线索）促进学习相比，没有措辞。与模式结构“不同步”的线索（异步短语线索）促进了24元素模式的学习，阻碍了20元素模式的学习。有证据表明，在后一种情况下，3.0秒的停顿作为“空白”试验，诱导大鼠“跳”到序列中的下一个连续位置。在实验2中，较短的0.5秒的停顿作为措辞的线索，在20个元素的模式实验1。同步短线索促进学习，而异步措辞线索没有效果。此外，同步线索的去除产生赤字的性能上以前的线索试验，而异步线索的去除没有影响。实验2的结果支持的概念，在这两个实验中的措辞线索作为歧视性线索，并间接表明，大鼠同时敏感的模式元素线索，额外的序列线索（如措辞线索），和顺序事件的相对时间。
Two experiments investigated how brief pauses introduced into serial patterns as phrasing cues would affect pattern learning in rats. In Experiment 1, a 24-element pattern consisted of eight 3-element chunks, whereas a 20-element pattern consisted of four 5-element chunks. In both patterns, 3.0-s temporal pauses placed at chunk boundaries (synchronous phrasing cues) facilitated learning compared to no phrasing. Cues “out of sync” with pattern structure (asynchronous phrasing cues) facilitated learning for the 24-element pattern and retarded learning for the 20-element pattern. Evidence suggested that in the latter case, 3.0-s pauses served as “blank” trials that induced rats to “skip” to the next serial position in sequence. In Experiment 2, shorter 0.5-s pauses served as phrasing cues in the 20-element pattern of Experiment 1. Synchronous short cues facilitated learning, whereas asynchronous phrasing cues had no effect. Furthermore, removal of synchronous cues produced deficits in performance on formerly cued trials, whereas removal of asynchronous cues had no effect. The results of Experiment 2 support the notion that in both experiments phrasing cues served as discriminative cues and indirectly suggest that rats are concurrently sensitive to pattern element cues, extra-sequence cues (such as phrasing cues), and to the relative timing of sequential events.