Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis

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% reduc...

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Autores principales: Ortega, G., Golombek, D.A., Otero, D., Romanelli, L., Cardinali, D.P.
Formato: JOUR
Materias:
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
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_07420528_v9_n2_p137_Ortega
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_07420528_v9_n2_p137_Ortega
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spelling todo:paper_07420528_v9_n2_p137_Ortega2023-10-03T15:38:21Z Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis Ortega, G. Golombek, D.A. Otero, D. Romanelli, L. Cardinali, D.P. 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 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. Fil:Ortega, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Golombek, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Romanelli, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07420528_v9_n2_p137_Ortega
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
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
topic_facet 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
description 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.
format JOUR
author Ortega, G.
Golombek, D.A.
Otero, D.
Romanelli, L.
Cardinali, D.P.
author_facet Ortega, G.
Golombek, D.A.
Otero, D.
Romanelli, L.
Cardinali, D.P.
author_sort Ortega, G.
title Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis
title_short Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis
title_full Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis
title_fullStr Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis
title_full_unstemmed Effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: Classical and dynamic analysis
title_sort effect of zeitgeber intensity reduction on a simulated dual-oscillator human circadian system: classical and dynamic analysis
url http://hdl.handle.net/20.500.12110/paper_07420528_v9_n2_p137_Ortega
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AT romanellil effectofzeitgeberintensityreductiononasimulateddualoscillatorhumancircadiansystemclassicalanddynamicanalysis
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