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Science 20 September 1968:
Vol. 161. no. 3847, pp. 1256 - 1259
DOI: 10.1126/science.161.3847.1256
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Articles

Program Clocks in Smail Mammals

J. Lee Kavanau 1 and Carl E. Rischer 1

1 Department of Zoology, University of California, Los Angeles

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.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Quantitative analysis of the age-related fragmentation of hamster 24-h activity rhythms.
P. D. Penev, P. C. Zee, and F. W. Turek (1997)
Am J Physiol Regulatory Integrative Comp Physiol 273, R2132-R2137
   Abstract »    Full Text »    PDF »
Activity of nocturnal primates: influences of twilight zeitgebers and weather.
J. Kavanau and C. Peters (1976)
Science 191, 83-86
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)