Online Archive of University of Virginia Scholarship
Circadian rhythm modification in rats by whole-life synchrony to a 27-hour day111 views
Author
Brown, Frederick M. , Psychology, University of Virginia
Advisors
Finger, Frank W., Psychology, University of Virginia
Hahn, John F., Psychology, University of Virginia
Homzie, M. Jerry, Psychology, University of Virginia
Abstract
Resistance to modification is one of the primary characteristics of an organism's circadian rhythm, that spontaneous near-24-hr. biorhythm observed in the absence of daily environmental rhythms. Earlier studies attempting modification met with no success. Once the rhythms ran free of the adiurnal, or non-24-hr., environmental synchronizers they quickly readjusted to the original steady-state circadian period. The readjustment process which was completed within five to eight days consisted of a series of variable-length cycles, denoted "transients." These and related results have led investigators to attribute the origin of circadian timing to alleged innate, but presently undetermined, mechanisms.
Degree
PHD (Doctor of Philosophy)
Keywords
Circadian rhythms
Language
English
Rights
All rights reserved (no additional license for public reuse)
Brown, Frederick M. . Circadian rhythm modification in rats by whole-life synchrony to a 27-hour day. University of Virginia, Psychology, PHD (Doctor of Philosophy), 1971-01-01, https://doi.org/10.18130/hg9r-fd75.
