Kavanau J L, Rischer C E
Science. 1968 Sep 20;161(3847):1256-9. doi: 10.1126/science.161.3847.1256.
Complex patterns of time, direction, and speed of running by small nocturnal mammals in activity wheels sometimes are duplicated almost exactly from night to night. These activity pattern repetitions disclose: (i) previously unknown capabilities of biological clocks to act as sequence programmers for behavior; (ii) that animals can retain a record of the sequence and timing of their activities covering an entire night; and (iii) that the activities of one night can bias an animal toward similar behavior on subsequent nights.
小型夜行性哺乳动物在活动轮中的时间、方向和奔跑速度的复杂模式有时会几乎每晚完全重复。这些活动模式的重复揭示了：（i）生物钟作为行为序列编程器的先前未知能力；（ii）动物能够保留其整个夜晚活动的序列和时间记录；以及（iii）一个夜晚的活动会使动物在随后的夜晚倾向于类似行为。
