Schimmel M, Waterhouse J, Marques MD, Weinert D: Circadian and Ultradian Rhythmicities in very premature neonates Maintained in Incubators. Biol Rhythm Res 2002, 33:83-112.Schimmel, M., Waterhouse, J., Marques, M.D., Weinert, D. (2002). Circadian and Ultradian rhythmi- cities in ...
This paper presents evidence for the existence of both a circadian and an ultradian rhythm in the elongation growth of rice roots. Root elongation of rice ( Oryza sativa) was recorded under dim green light by using a CCD camera connected to a computer. Four treatment conditions were set-up ...
Google Share on Facebook Thesaurus Medical Encyclopedia Wikipedia ul·tra·di·an (ŭl-trā′dē-ən) adj. Relating to or exhibiting periodic physiological activity that occurs more than once every 24 hours. [ultra-+(circa)dian.] American Heritage® Dictionary of the English Language, Fifth...
frequencies integral multiples of the circadian rhythm)24. Indeed, Power Spectrum and Enright’s analyses were unable to detect all possible rhythms in time series, thus introducing differences between animals (Fig.2). Locomotion
Those capacitated sperm recruited by chemotaxis showed an ultradian rhythm with a cycle every 2 h, which might be influenced by unknown intrinsic sperm factors. Two infradian rhythms of 12 months for the % ARi and of 6 months for % Chex were observed, which are associated with the joint...
Garcia Diaz, C , Molina Borja, M . , Gonzalez Gonzalez, J., (1989): Circadian rhythm and ultradian oscillations i n the motor activity of the lacertid lizard Gallotia galloti i n continuous light. J. Inter- discipl. Cycle Res. 20: 97-105....
ResultsIn the 134 subjects, detections showed a strongly circadian and uniform pattern irrespective of region of onset that peaked during normal sleep hours. In contrast, long episodes and LE-SZ patterns varied by region. Neocortical regions had a monophasic, nocturnally dominant rhythm, whereas ...
Circadian rhythm of visual sensitivity in Manduca sexta and its development from an ultradian rhythm - Bennett - 1983 () Citation Context ... the visual sensitivity in anticipation of changes in ambient light intensity. Circadian (i.e. endogenous) rhythms have been described in the retina of ...
RHYTHMBIOLUMINESCENCECIRCADIAN rhythmsGENE expressionIntrinsically driven ultradian rhythms in the hourly range are often co-expressed with circadian rhythms in various physiological processes including metabolic processes such as feeding behaviour, gene expression and cellular metabolism. Sev...
Paetkau V, Edwards R, Illner R (2006) A model for generating circadian rhythm by coupling ultradian oscillators . Theoretical biology & medical modelling 3 : e12 doi: 10.1186/1742-4682-3-12V. Paetkau, R. Edwards and R. Illner, A model for generating circadian rhythm by coupling ultradian...