Maternal behaviour in the Wistar rat under atypical Zeitgeber

Schelstraete, I.; Knaepen, Etienne; Dutilleul, Pierre; Weyers, M H

doi:10.1016/0031-9384(92)90452-8

Cited by 8 publications

(5 citation statements)

References 16 publications

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“…, 2003b, 2006) and corticosterone (Neumann, 2001, 2003). Classically, Schelstraete et al. (1992) reported that inverting the light/dark cycle and temperature every 72 h, designated as atypical zeitgeber, disrupted the temporal distribution of maternal care.…”

Section: Discussionmentioning

confidence: 99%

Importance of early lighting conditions in maternal care by dam as well as anxiety and memory later in life of offspring

Toki

Morinobu

Imanaka

et al. 2007

Eur J of Neuroscience

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Rodent studies have revealed that the early rearing environment plays an important role in the development of stress vulnerability, memory and cognition. Although early lighting conditions (ELC) are involved in these neuronal developments through both maternal and offspring behavior, their influence has not been fully elucidated. Thus, by using Sprague-Dawley rats, we examined whether ELC affected maternal care by the dam and the subsequent neurodevelopment of the offspring. Prolonged dark phase conditions (PDC) (light/dark, 6/18 h) and prolonged light phase conditions (light/dark, 18/6 h) were administered from postnatal day 2 to postnatal day 14. Throughout this period, maternal care and the circadian rhythmicity of dams were investigated. In adolescence and adulthood of the offspring, we measured anxiety-like behavior, social interaction, object recognition memory, activity rhythm and corticosterone response to stress with hippocampal expression of N-methyl-D-aspartate and glucocorticoid receptor mRNAs. PDC altered maternal care and circadian rhythmicity in the dam compared with normal lighting conditions and prolonged light phase conditions. PDC markedly increased anxiety-like behavior, decreased social interaction and object recognition memory, and inhibited corticosterone feedback in offspring later in life. Furthermore, hippocampal levels of glucocorticoid receptor mRNA and N-methyl-D-aspartate receptor 2B mRNA in rats subjected to PDC were significantly lower than in animals subjected to normal lighting conditions. In the adult offspring, the circadian rhythm of locomotor activity was not affected. These findings suggested that ELC affect mother-infant interactions and subsequently at least partially alter the neurobehavioral development of offspring.

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Section: Discussionmentioning

confidence: 99%

Importance of early lighting conditions in maternal care by dam as well as anxiety and memory later in life of offspring

Toki

Morinobu

Imanaka

et al. 2007

Eur J of Neuroscience

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“…In temperature, and mood cycles (Cambras et al, 1998;Connolly et al,1983, Diez-Noguera et al,1990, Schelstraete et al, 1992Suchecki et al, 1998, Tononi., 2001, Mistlberger et al, 2004Toki et al, 2007, Yerushalmi, et al, 2006, Bunney et al, 2008, LeSauter et al, 2009). suggesting that circadian visual pathways are capable of the kind of developmental plasticity seen in cortical visual pathways (Morishita et al, 2008).…”

Section: Assessment Of Rhythmicity Parameters Of Home-cage-locomotionmentioning

confidence: 99%

Susceptible period of socio-emotional development affected by constant exposure to daylight

Koshiba

Senoo

Karino

et al. 2015

Neuroscience Research

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As a diurnal experimental primate, the common marmoset (Callithrix jacchus) has recently contributed to numerous kinds of studies of neurobiological psychiatry as an essential pre-clinical model. The marmoset matures sexually within one or two years after birth. Thus, we can observe how the primate learns and develops psycho-cognitive functions through experiences in experimental environment for a much shorter period compared to that of humans. Longer daylight exposure may affect psychological development of children. In our research, we focus on raising marmosets under constant daylight from birth until various ages. In order to quantitatively evaluate the development of higher-ordered psychological functions, we designed a system of socio-behavioral tests and multivariate correlation analysis methods based on principal component analysis. With reference to the call and typical body movement expressed during a particular social context, we statistically inferred the emotional features of the subjects. In the current literature, we review our published results showing increased alert behaviors by constant light, and then, attempted to extend our additional analysis to seek age-dependent susceptibility to constant light. We then present the neurobiological mechanisms with reference to previous research reports. The current review suggests possible existence of a susceptible period earlier than three to five month-old in the environment-induced developmental disorder model, supposedly like attention deficit hyperactive disorders (ADHD) or oppositional defiant disorder (ODD).

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“…It also arises in biologically-related phenomena, Downloaded by [Monash University Library] at 16:28 11 April 2015 such as the fluctuations of the market price of bananas in a developing country, since the banana-tree bears fruit three times a year. These three examples, loosely inspired from Dutilleul and Till (1992), Schelstraete et al (1992) and Degand and Dutilleul (1987) respectively, are used to illustrate my purpose throughout the paper. The same variable is observed over time: the ring-width of a tree, time spent by the mother rat in a given activity and the price of a fruit on the market.…”

Section: Univariate Time Series and The Theoretical Autocorrelation Fmentioning

confidence: 98%

“…A cosinor model with period T -24.0 (when time is expressed in hours) is particularly useful for circadian rhythm analysis (see, e.g., Schelstraete et al, 1992; see also Morgan and Minors, 1995). If there is more than one sinusoidal component present, a harmonic model generally provides a theoretical autocorrelation function whose analysis does not allow easy identification of the periods involved (see the Autocorrelograms and Rhythm Analysis section).…”

Section: P(k) = Cos(2nt/t)mentioning

confidence: 99%

Rhythms and autocorrelation analysis

Dutilleul

1995

Biological Rhythm Research

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The time domain approach to the analysis of time-series data is based on the concept of autocorrelation which arises whenever the same variable is observed sequentially over time, on the same individual. The parameter function is the theoretical autocorrelation function that may be estimated by the sample autocorrelogram. While the periodic pattern of a time series is reproduced by the autocorrelation function estimate where the lags of maximum autocorrelation correspond to peaks and troughs in the series, the ability of autocorrelograms to provide information on the respective period of different rhythm components is addressed. Firstly, the autocorrelation concept and the theoretical autocorrelation function are defined for univariate time series; related forms are considered and their properties reviewed, including the multidimensional and multivariate cases. Secondly, focusing on univariate time series, the methods of statistical inference available in autocorrelation analysis are outlined, and their underlying assumptions are discussed. Thirdly, the specific problem of periodic time series is addressed and the application of autocorrelation analysis to the study of rhythms is presented. Practical guidelines are given for the definition of the maximum lag in an autocorrelogram in relation with the length of the series and the number and period of rhythm components, for the series length required to detect a periodicity for a given signal-to-noise ratio in a power analysis, and for the problems of data unequally spaced in time and of noninteger periods, among others.

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Maternal behaviour in the Wistar rat under atypical Zeitgeber

Cited by 8 publications

References 16 publications

Importance of early lighting conditions in maternal care by dam as well as anxiety and memory later in life of offspring

Importance of early lighting conditions in maternal care by dam as well as anxiety and memory later in life of offspring

Susceptible period of socio-emotional development affected by constant exposure to daylight

Rhythms and autocorrelation analysis

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