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151 publications, page 5 of 16
(CSV)
  • Article English OPEN
    Avello, Paula A.; Davis, Seth J.; Ronald, James; Pitchford, Jonathan W.;
    (2019)
    Publisher: Ubiquity Press
    The circadian clock is a biological mechanism that permits some organisms to anticipate daily environmental variations. This clock generates biological rhythms, which can be reset by environmental cues such as cycles of light or temperature, a process known as entrainme...
  • Article English OPEN
    Dale L Clayton;
    (2016)
    Publisher: Ubiquity Press
    Data presented in this paper test the hypotheses that Hirsch’s positive geotaxis ('Lo') and negative geotaxis ('Hi5') strains of Drosophila melanogaster (fruit fly) differ in length of the free-running circadian activity period (tau) as well as adult geotaxis. Several g...
  • Article English OPEN
    Alvarez, Pilar; Cardinali, Daniel; Cano, Pilar; Rebollar, Pilar; Esquifino, Ana;
    (2005)
    Publisher: Ubiquity Press
    <p>Abstract</p> <p>Background</p> <p>This study describes the 24-h changes in plasma prolactin levels, and dopamine (DA), serotonin (5HT), gamma-aminobutyric acid (GABA) and taurine concentration in median eminence and adenohypophysis of newborn male rabbits.</p> <p>Met...
  • Article English OPEN
    Hiltunen, Laura; Suominen, Kirsi; Lönnqvist, Jouko; Partonen, Timo;
    (2011)
    Publisher: Ubiquity Press
    <p>Abstract</p> <p>Background</p> <p>Many previous studies have documented seasonal variation in suicides globally. We re-assessed the seasonal variation of suicides in Finland and tried to relate it to the seasonal variation in daylength and ambient temperature and in ...
  • Article English OPEN
    Refinetti, Roberto;
    (2013)
    Publisher: Ubiquity Press
    The year in which this editorial is being published (2013) marks the 10th anniversary of the launch of the Journal of Circadian Rhythms.
  • Article English OPEN
    Ogbagaber, Semhar; Albert, Paul S; Lewin, Daniel; Iannotti, Ronald J;
    (2012)
    Publisher: Ubiquity Press
    <p>Abstract</p> <p>Background</p> <p>Physical activity as measured by activity counts over short time intervals across a 24 h period are often used to assess circadian variation. We are interested in characterizing circadian patterns in activity among adolescents and ex...
  • Article English OPEN
    Boughattas Naceur A; Sebai Hichem; Sani Mamane; Ben-Attia Mossadok;
    (2011)
    Publisher: BioMed Central
    <p>Abstract</p> <p>Sodium nitroprusside (SNP) is widely used in pharmacological studies as a potent vasodilator or a nitric oxide donor. SNP-induced ataxic effects were assessed in mice by the Joulou-Couvoisier test. Swiss albino mice of both genders, 2-8 weeks of age, ...
  • Article English OPEN
    Leise, Tanya L;
    (2013)
    Publisher: BioMed Central
    We review time-frequency methods that can be useful in quantifying circadian and ultradian patterns in behavioral records. These records typically exhibit details that may not be captured through commonly used measures such as activity onset and so may require alternati...
  • Article English OPEN
    Conroy, Deirdre A; Spielman, Arthur J; Scott, Rebecca Q;
    (2005)
    Publisher: Ubiquity Press
    <p>Abstract</p> <p>Background</p> <p>CBFV (cerebral blood flow velocity) is lower in the morning than in the afternoon and evening. Two hypotheses have been proposed to explain the time of day changes in CBFV: 1) CBFV changes are due to sleep-associated processes or 2) ...
  • Article English OPEN
    Amrita Srivastava; Shalie Malik; Garima Yadav; Sangeeta Rani;
    (2015)
    Publisher: Ubiquity Press
    Background: Daily feeding and locomotion are interrelated behaviours. The time spent in feeding and rate of food intake depends on food availability. In low food condition, the birds would show intense movement (locomotion) for a longer time throughout the day however d...
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