Discrimination of intertrial intervals in cross-modal transfer of duration
Discrimination of intertrial intervals in cross-modal transfer of duration
复制标题
持续时间跨模式转移中试验间间隔的判别
DOI：
10.3758/bf03330243
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
R. Church
中科院分区：
文献类型：
--
作者：
W. Meck;R. Church
20只大鼠被训练在2秒的光信号后按下一个杠杆（短），在8秒的光信号后按下另一个杠杆（长）。从一个试验结束到下一个试验信号开始的间隔时间为30秒。一半的动物在相同的反应规则（非反转）下对2秒和8秒噪声信号的区分进行了测试；一半的人用相反的反应规则（反转）进行测试。在交叉模态测试中，非逆转组的正确率高于偶然性；逆转组的正确率低于偶然性。当信号被忽略时，动物的表现比随机表现得更好，这表明它们区分了从一次试验结束到下一次试验中选择机会的时间差异（32秒对38秒）。
Twenty rats were trained to press one lever (“short”) following a 2-sec light signal and the other lever (“long”) following an 8-sec light signal. The interval from the end of one trial to the onset of the signal on the next trial was 30 sec. Half the animals were tested on a discrimination between 2-sec and 8-sec noise signals with the same response rule (nonreversal); half were tested with the opposite response rule (reversal). On cross-modal testing, the nonreversal group was correct more often than chance; the reversal group was correct less often than chance. When signals were omitted, the animals performed better than chance, indicating that they discriminated the difference in time from the end of one trial until the opportunity for a choice on the next trial (32 vs. 38 sec).