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Abstract:

The two-oscillator model of human circadian rhythmicity was analyzed when a zeitgeber relative intensity of 1, 0.5, or 0.1 was introduced into the equations. Fourier analysis was compared with dynamic analysis such as attractor reconstruction or Liapunov exponent calculation. After a 50 or 90% reduction in zeitgeber intensity, the dynamics of the system became equivalent and differed significantly from those of a system with maximal zeitgeber intensity. When 10% aleatory noise was added to the data, the analysis was still applicable, and the results obtained were essentially the same as in the absence of noise. Dynamic analysis could thus provide a distinct classification for periodic data, based on the type of analysis. © 1992 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted.

Registro:

Documento: Artículo
Título:Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis
Autor:Ortega, G.; Golombek, D.A.; Otero, D.; Romanelli, L.; Cardinali, D.P.
Filiación:Departamento de Fisiologia, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:Circadian rhythm simulation; Dynamic systems; Models; Oscillator theory; Zeitgeber intensity; article; biological model; biometry; body temperature; circadian rhythm; Fourier analysis; human; physiology; sleep; wakefulness; Biometry; Body Temperature; Circadian Rhythm; Fourier Analysis; Human; Models, Biological; Sleep; Wakefulness
Año:1992
Volumen:9
Número:2
Página de inicio:137
Página de fin:147
DOI: http://dx.doi.org/10.3109/07420529209064525
Título revista:Chronobiology International
Título revista abreviado:Chronobiol. Int.
ISSN:07420528
CODEN:CHBIE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07420528_v9_n2_p137_Ortega

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Citas:

---------- APA ----------
Ortega, G., Golombek, D.A., Otero, D., Romanelli, L. & Cardinali, D.P. (1992) . Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis. Chronobiology International, 9(2), 137-147.
http://dx.doi.org/10.3109/07420529209064525
---------- CHICAGO ----------
Ortega, G., Golombek, D.A., Otero, D., Romanelli, L., Cardinali, D.P. "Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis" . Chronobiology International 9, no. 2 (1992) : 137-147.
http://dx.doi.org/10.3109/07420529209064525
---------- MLA ----------
Ortega, G., Golombek, D.A., Otero, D., Romanelli, L., Cardinali, D.P. "Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis" . Chronobiology International, vol. 9, no. 2, 1992, pp. 137-147.
http://dx.doi.org/10.3109/07420529209064525
---------- VANCOUVER ----------
Ortega, G., Golombek, D.A., Otero, D., Romanelli, L., Cardinali, D.P. Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis. Chronobiol. Int. 1992;9(2):137-147.
http://dx.doi.org/10.3109/07420529209064525