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Cited by 5Circadian rhythm and melatoninSleep and Wakefulness ResearchSleep and related disorders

Longitudinal study of the spectral composition of behavioral rhythms in the rat

Castro, Eric Campos Vieira, Andrade, Miriam Mendonça Morato·2005·Biological Rhythm Research
DOI 10.1080/09291010400028880
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Abstract

Four male Wistar rats were housed in pairs of siblings, on LD 12:12h and 22°C ± 2°C. Food and water were provided ad libitum. Behavior was videotaped from the 1st to the 3rd month of life. In each age-bracket the spectral composition of rhythmic expressions of the following behavioral categories was analyzed: rest, eat, drink, cage exploration, self-grooming, and social interaction. Rats maintained a stable rank order of time engaged in different behaviors through development, despite modification of time spent in grooming, drinking and social interaction as they got older. Spectral composition of behaviors followed a general ontogenetic pattern: ultradian frequencies of 12-h and 8-h were the strongest in the 1st month and circadian periodicity was predominant in the 3rd month. The increase of circadian power compared with ultradian power components agrees with literature findings. To our knowledge, self-grooming and social interaction have not been investigated before in this context. The similarities between siblings suggest the mutual influence of partners and/ or the existence of genetic factors. Ongoing studies are examining the importance of the social surroundings in which animals develop to the acquisition of adult rhythmic pattern.

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Crossref · 10.1080/09291010400028880

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33 of 33 references verified0 citation errors · 0 not checkable

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  • There is a prevalence of ultradian components in the rhythms of young rodents under both entrained and free-running conditions which disappears in the post-weaning and pubertal periods.

    “For example, multiple authors have commented that there is a prevalence of ultradian components in the rhythms of young rodents under both entrained and free-running conditions which disappears in the post-weaning and pubertal periods [26, 38, 52, 76, 85, 93].”

    From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [38]

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Authors
Castro, E. C. V., & Andrade, M. M. M.
Affiliations
  • Universidade Federal de Santa Catarina (BR)
  • Universidade Estadual Paulista (Unesp) (BR)
Corresponding author
Andrade, Miriam Mendonça Morato
Venue
Biological Rhythm Research
Publisher
Informa UK Limited
Published
2005-02
Volume
36
Issue
1-2
Pages
131-140
ISSN
  • 0929-1016 (ISSN-L)
  • 1744-4179
DOI
10.1080/09291010400028880
OpenAlex
W2089826979
Cited by
5
References
33
Citations by year
2022: 1 · 2013: 1 · 2012: 1
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Rhythm Research (publishedVersion)
  • Acervo Digital da Universidade Estadual Paulista (Universidade Estadual Paulista) (submittedVersion)
  • UNESP Institutional Repository (São Paulo State University) (submittedVersion)
Funders
Fundação de Amparo à Pesquisa do Estado de São Paulo
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
Keywords
behavioral rhythms, spectral composition, ultradian rhythms, circadian rhythm, ontogeny, self-grooming, social interaction, genetic factors

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