Delayed Matching by Fornix-Transected Monkeys: The Sample, the Push and the Bait
Delayed Matching by Fornix-Transected Monkeys: The Sample, the Push and the Bait
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穹窿横切猴子的延迟匹配：样本、推力和诱饵
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
S. Harrison
中科院分区：
文献类型：
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作者：
D. Gaffan;Claude Shields;S. Harrison
在普通延迟匹配样本的获取事件中，猴子看到一个样本，将其移开，并在下面找到食物奖励；随后，保留测试包括在该样本和干扰项之间进行选择，并且可以通过保留测试中选择的正确性来评估获取事件所形成的记忆的强度。目前的实验改变了习得事件，并检查了这些变化对正常猴子和穹窿横断猴子记忆的影响。一种变化是照常进行，但在采集时绝不使用诱饵；这种变化允许评估食物奖励在普通匹配中的作用。另一个是在第二次采集事件中像平常一样呈现样品、诱饵并被移动，但也呈现干扰物、诱饵但不需要移动；这种“推-匹配”变化允许评估位移的记忆。正常猴子的主要结果是，与无诱饵样本的匹配比与有诱饵样本的匹配学习得快得多。穹窿横断后，与诱饵和未诱饵样本匹配的最终性能水平未受影响，但推匹配显示出永久性缺陷。这些结果支持了早期的迹象，即穹窿被横断的猴子具有正常的感觉记忆，但对工具反应的记忆不足。
In the acquisition event of ordinary delayed matching to sample the monkey sees a sample, displaces it, and finds a food reward underneath; subsequently the retention test consists of a choice between that sample and a distractor, and the strength of the memory laid down by the acquisition event may be assessed by the correctness of choice at the retention test. The present experiments varied the acquisition events and examined the effect of those variations on normal and fornix-transected monkeys' memory. One variation was to proceed as normally but never to bait the sample at acquisition; this variation allowed assessment of the role of the food reward in ordinary matching. Another was to present the sample, baited and to be displaced, as normally, but to present also the distractor, baited but not requiring to be displaced, in a second acquisition event; this “push–match” variation allowed assessment of memory for the displacement. The main result from normal monkeys was that matching to unbaited samples was learned much faster than matching to baited samples. Following fornix transection, final performance levels in matching to baited and to unbaited samples were unimpaired but push–match showed a permanent deficit. These results support earlier indications that fornix-transected monkeys have normal sensory memory but are deficient in the memory of instrumental responses.