Processing of complex auditory stimuli (tunes) by rats and monkeys (Cebus apella)
Processing of complex auditory stimuli (tunes) by rats and monkeys (Cebus apella)
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大鼠和猴子（Cebus apella）对复杂听觉刺激（曲调）的处理
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
D. Salmon
中科院分区：
文献类型：
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作者：
M. R. D’amato;D. Salmon
研究了老鼠和猴子基于频率轮廓而不是局部特征来辨别复杂听觉刺激(“曲调”)的程度。在实验1中，用S+和S−的曲调训练的一组大鼠和猴子获得了一种简单的操作符辨别，速度不比每次试验中收到相同音符的组快，但在每次试验中以新的随机顺序进行；在为检测受过曲调训练的动物对频率轮廓的学习而设计的两项转移测试上，这两组也没有不同。调子训练组和随机音调组的习得似乎是基于S+和S−之间的总体频率差异，约为1.5八度。在实验2中，S+和S−在总频率和单音上都是相似的，最显著的区别特征是他们的调式。曲调训练组在习得上明显优于随机音符组，初步的迁移测试表明，前者可能已经学会了基于频率轮廓的辨别。然而，实验3的详细迁移测试有力地表明，受过调谐训练的大鼠和猴子的辨别能力主要基于局部线索，而不是频率轮廓。根据实验4的结果，一项早期研究的数据表明猴子和大鼠的频率轮廓学习被重新解释为局部线索控制的数据。
The degree to which rats and monkeys base their discriminations of complex auditory stimuli (“tunes”) on frequency contours rather than on local features was investigated. In Experiment 1, groups of rats and monkeys trained with tunes as S+ and S− acquired a simple operant discrimination no faster than groups that received the same notes of each tune but in a new random order on each trial; neither did the groups differ on two transfer tests devised to detect learning of frequency contour in the tune-trained animals. Acquisition in the tune-trained and random-notes groups seemed to be based on the overall frequency difference between S+ and S−, which was about 1.5 octaves. In Experiment 2, S+ and S− were similar to each other with regard to overall frequency and individual notes, the most salient differentiating characteristic of the tunes being their tonal pattern. The tune-trained groups were clearly superior to the random-notes animals in acquisition, and an initial transfer test suggested that the former might have learned the discrimination on the basis of frequency contour. However, the detailed transfer tests of Experiment 3 strongly suggested that the tune-trained rats and monkeys based their discriminations primarily on local cues rather than on frequency contour. Based on the results of Experiment 4, the data of an earlier study that suggested frequency contour learning in monkeys and rats were reinterpreted in terms of control by local cues.