BACKGROUND STIMULI AS A REMINDER AFTER SPONTANEOUS FORGETTING - ROLE OF DURATION OF CUEING AND CUING-TEST INTERVAL
BACKGROUND STIMULI AS A REMINDER AFTER SPONTANEOUS FORGETTING - ROLE OF DURATION OF CUEING AND CUING-TEST INTERVAL
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DOI：
10.3758/bf03213148
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发表时间：
1984-01-01
期刊：
影响因子：
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通讯作者：
SARA, SJ
中科院分区：
文献类型：
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作者：
DEWEER, B;SARA, SJ
在相对复杂的迷宫中，当训练到测试间隔为25天时，可靠遗忘清晰可见。这种遗忘表现在运行迷宫的时间更长，以及在随后的测试中错误和从最后一次训练试验水平回溯的次数增加。需要提醒的是，就在测试试验之前，S在实验室中暴露于背景刺激的90次实验本身并没有包含足够的信息来促进幼稚大鼠的表现，显著改善了已经忘记的大鼠的迷宫表现，即使在第一次测试试验中也是如此。另外两个实验旨在评估预测线索的时间和持续时间的作用。在第一个实验中，在实验前的不同时间给动物呈现提醒(时长90 S)。这一提醒只在测试前提出时才能显着缓解遗忘，而在测试前1小时或24小时提示则效果较差。在第二个实验中，所有实验组在测试前呈现的背景线索的持续时间各不相同。只对10只S进行提示处理的动物表现出与对照组相同的水平；对30只S进行提示处理，特别是对90只S进行提示处理，可以减轻遗忘；更长时间地暴露在背景刺激(300 S)中会导致中等水平的表现，这可能是由于这些刺激的提示值部分消失所致。
With a relatively complex maze, reliable forgetting is seen clearly when the training-to-test interval is 25 days. This forgetting is demonstrated by longer time to run the maze and by an increase in the number of errors and retracings from the last training trial level at a subsequent test. A reminder, a 90-s exposure to background stimuli in the experimental room just prior to the test trial, that does not in itself contain sufficient information to facilitate performance in naive rats, significantly improves maze performance in rats that have forgotten, even on the 1st test trial. Two additional experiments were aimed at assessing the role of time and duration of pretest cuing. In the 1st experiment, the animals were presented the reminder (90 s in duration) at different times before the test trial. This reminder significantly alleviates forgetting only when presented just prior to the test and is less effective when given 1 or 24 h before the test. In the 2nd experiment, contextual cues, which were presented just prior to testing in all experimental groups, varied in duration. Animals given the reminder treatment for only 10 s perform at the same level as controls; cuing for 30 s and especially for 90 s alleviates forgetting; and a longer exposure to background stimuli (300 s) leads to intermediate levels of performance, probably due to a partial extinction of the cue value of these stimuli.