Now showing items 1-10 of 41
Modeling Two-Oscillator Circadian Systems Entrained by Two Environmental Cycles
(PUBLIC LIBRARY SCIENCE, 2011)
Several experimental studies have altered the phase relationship between photic and non-photic environmental, 24 h cycles (zeitgebers) in order to assess their role in the synchronization of circadian rhythms. To assist ...
External temporal organization in biological rhythms
(Taylor & Francis LTDAbingdon, 2013-08-02)
This paper is intended as a proposition of a new concept in the field of chronobiology, External Temporal Organization, a notion complementary to that of the Internal Temporal Organization. We will try to explain the ...
Influence of chronotype and social zeitgebers on sleep/wake patterns
(Associação Brasileira de Divulgação Científica, 2008-10-01)
Inter-individual differences in the phase of the endogenous circadian rhythms have been established. Individuals with early circadian phase are called morning types; those with late circadian phase are evening types. The ...
Ritmos de actividad locomotora y uso de las cuevas en condiciones seminaturales en Ctenomys talarum (Rodentia, Octodontidae)
(Sociedad de Biología de Chile, 2000)
Effect of constant light on fetal and maternal prolactin rhythms in sheep
(Endocrine Society, 1996)
A 24-h rhythm of plasma PRL is present in fetal sheep. This rhythm is synchronized to an environmental clue (zeitgeber). We determined whether the light-dark cycle (L:D) is a zeitgeber for the fetal PRL rhythm and, if ...
Forced Desynchronization of Activity Rhythms in a Model of Chronic Jet Lag in Mice
(SAGE PUBLICATIONS INCTHOUSAND OAKS, 2012)
We studied locomotor activity rhythms of C57/Bl6 mice under a chronic jet lag (CJL) protocol (ChrA(6/2)), which consisted of 6-hour phase advances of the light-dark schedule (LD) every 2 days. Through periodogram analysis, ...
Privación selectiva de sueño rem en ratas : recuperación espontánea versus enmascaramiento: un estudio de homeostasis de sueño rem
(Universidad de Chile, 2017)
La homeostasis de sueño REM refiere el proceso mediante el cual la cantidad de tiempo en este estado se mantiene dentro de límites mínimos aceptables; sin embargo existen reportes contradictorios respecto a si el sueño REM ...
Mismatch between perceived family and individual chronotype and their association with sleep-wake patterns
(London, New York : Springer Nature, 2019, 2019)
Efeitos de vocalizações de co-específicos e do escuro sobre o ritmo circadiano da atividade motora em sagüis (Callithrix jacchus)
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em PsicobiologiaEstudos de Comportamento; Psicologia Fisiológica, 2007-09-06)
The principal zeitgeber for most of species is the light-dark photocycle (LD), though other environment factors as food availability, temperature and social cues may act. Daily adjustment of the circadian pacemaker may ...