Guenaire C, Delacour J
Physiol Behav. 1985 May;34(5):705-7. doi: 10.1016/0031-9384(85)90368-3.
Twenty-eight male rats of the Roman strains-fourteen RHA (Roman High Avoidance) and fourteen RLA (Roman Low Avoidance)-were submitted to a positively reinforced task, the delayed reinforced alternation test (DRA), in a T-maze. Performances of RLA rats were significantly better than those of RHA; RLA rats also had higher VTE (vicarious trial and error) and spontaneous alternation (SA) scores. These data confirm the fact that RLA may acquire positively reinforced learning as rapidly, or even more rapidly, than RHA rats, and that the differences in active avoidance behavior between these strains depend more on differential freezing behavior than on learning and memory capacities. Since the delayed reinforced alternation is considered as a working memory test, our results suggest that the Roman strains could be used as a genetic model for the neurobiological study of this form of memory.
28只来自罗马品系的雄性大鼠——14只RHA（罗马高回避型）和14只RLA（罗马低回避型）——在T型迷宫中接受了一项阳性强化任务，即延迟强化交替试验（DRA）。RLA大鼠的表现显著优于RHA大鼠；RLA大鼠的替代性试误（VTE）和自发交替（SA）得分也更高。这些数据证实了这样一个事实，即RLA大鼠可能比RHA大鼠更快地获得阳性强化学习，甚至可能更快，而且这些品系在主动回避行为上的差异更多地取决于不同的冻结行为，而不是学习和记忆能力。由于延迟强化交替被视为一种工作记忆测试，我们的结果表明，罗马品系可作为这种记忆形式神经生物学研究的遗传模型。
