Different patterns of circadian oscillation in the suprachiasmatic nucleus of hamster,mouse, and rat |
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Authors: | P?W?Burgoon P?T?Lindberg Email author" target="_blank">M?U?GilletteEmail author |
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Institution: | (1) B107 Chemical and Life Sciences Laboratory, Department of Cell and Structural Biology, University of Illinois at Urbana-Champaign, 601 S. Goodwin Avenue, Urbana, IL 61801, USA;(2) The Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA |
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Abstract: | Although spontaneous neural firing in the mammalian suprachiasmatic nucleus is accepted to peak once during mid-subjective day, dual activity peaks have been reported in horizontal brain slices taken from hamsters. These two peaks were interpreted as new evidence for the theory of dual circadian oscillators and raised the expectation that such activity would be found in other circadian model systems. We examined hamster, mouse, and rat slices in both coronal and horizontal planes and found a second peak of activity only in hamster horizontal preparations. This raises interesting questions about the relative circadian physiology of these important experimental animals.Abbreviations CT
circadian time
- SCN
suprachiasmatic nucleus
P.W. Burgoon and P.T. Lindberg contributed equally to this work. |
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Keywords: | Circadian rhythm Hamster Mouse Rat Suprachiasmatic nucleus |
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