Sleep rhythmicity in infants: index of stress or maturation

Minard, Kathleen L.; Freudigman, Kimberly; Thoman, Evelyn B.

doi:10.1016/s0376-6357(99)00065-0

Cited by 7 publications

(7 citation statements)

References 45 publications

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“…Unlike that group of infants, all infants in the present study were selected for being irritable, and since irritable infants are more stressed than those who are not (Fuller, Keefe, & Curtin, 1994;Salisbury et al, 1998), the extremely strong relationships for each of the co-sleeping groups suggest a form of neurobehavioral rigidity. Previous research has indicated that early stress leads to greater rigidity in behavioral functioning (Brody, 1981;Borghese, Minard, & Thoman, 1995;Minard, Freudigman, & Thoman, 1999). In view of the increasing, negative correlation between AS and QS with increasing co-sleeping, as presented in Table 3, the ®ndings suggest that already stressed infants may be even more stressed by co-sleeping.…”

Section: The Sleep Of Infants Who Co-sleep When They Sleep Alone: a Rmentioning

confidence: 72%

The sleep of co‐sleeping infants when they are not co‐sleeping: Evidence that co‐sleeping is stressful

Hunsley

Thoman

2001

Developmental Psychobiology

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Co-sleeping proponents consider the practice to be "natural" and a potential protection against sudden infant death syndrome (SIDS); others consider the practice of an infant sleeping in the parents' bed for prolonged periods at night to place an infant at risk for harm or death. For this study, co-sleeping was investigated from a different perspective, that is, as a significant early experience to investigate as it may have implications for the infant's development. The sleep of 101 normal, full-term infants was recorded nonintrusively in the home for 24 hr periods when they were 5 weeks and 6 months old. Infants were assigned to three groups: short-term co-sleepers, long-term co-sleepers, and non-co-sleepers. Their sleep states and wakefulness were compared at the two ages and over age. At 5 weeks and 6 months, the long-term co-sleeping infants differed significantly from the non-co-sleepers on a number of measures: At 5 weeks, they showed more quiet sleep and longer bouts of quiet sleep; and at 6 months, they also showed less active sleep, fewer arousals in active sleep, and less wakefulness. Each of these differences indicates a markedly lower arousal level in the long-term co-sleeping infants. This sleep pattern has been repeatedly found to be an indicator of stress. We infer that a major source of stress for these infants is the experience of sleep disturbance documented for infants when they were co-sleeping. Based on extensive evidence for long-term effects of early stress, we conclude that co-sleeping should have significant implications for infants' neurobehavioral development.

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Section: The Sleep Of Infants Who Co-sleep When They Sleep Alone: a Rmentioning

confidence: 72%

The sleep of co‐sleeping infants when they are not co‐sleeping: Evidence that co‐sleeping is stressful

Hunsley

Thoman

2001

Developmental Psychobiology

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“…Third, sleep and cognition could both be mediated by other factors such as the maturational status of the infant. Some studies have tried to assess the maturation of infants and indicate that sleep might serve as a developmental indicator of risk as, for example, shown in a study on newborn babies by Minard, Freudigman, and Thoman () where sleep cyclicity in newborns and 6‐month olds was related to birth weight and subsequent mental development.…”

Section: Discussionmentioning

confidence: 99%

Infant wake after sleep onset serves as a marker for different trajectories in cognitive development

Pisch

Wiesemann

Karmiloff‐Smith

2018

Child Psychology Psychiatry

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“…A number of longitudinal studies provided a detailed account of infants' sleep-wake consolidation, focusing on the changes in sleep organisation and regulation that take place across different time spans. For example, longitudinal investigations were conducted over the first few weeks (Thoman & Witney, 1989), over the first few months (Hoppenbrouwers et al, 1988;Hunsely & Thoman, 2002;Minard, Freudigman, & Thoman, 1999), across the first year (Anders & Keener, 1985;Burnham, Goodlin-Jones, Gaylor, & Anders, 2002), and into the second year of life (de Roquefeuil et al, 1993;Louis et al, 1997). Taken together, the longitudinal studies indicate a gradual decrease in active sleep along with an increase in quiet sleep across the first months of life.…”

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confidence: 99%

Stability and changes in sleep regulation: A longitudinal study from 3 months to 3 years

Scher

Epstein

Tirosh

2004

International Journal of Behavioral Development

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The goal of the study was to examine the developmental course of sleep consolidation from infancy to preschool. The sleep of 50 healthy infants aged 3 months was recorded, at home, with actigraphs (computerised activity monitors). Follow-up recordings were carried out at 6, 9, 12, 20, and 42 months (due to attrition and occasional technical failures, complete sleep records were not available for all subjects at all ages). The main findings were that by 12 months, nocturnal sleep is well organised; nevertheless, sleep continues to become less fragmented and more efficient beyond the first year. The child’s level of motor activity during sleep, and the overall sleep efficiency were moderately stable across time. In contrast, sleep duration and the number of nightwaking episodes were unstable from 3 to 42 months of age. Taken together, the continuity and change in the group trajectory of sleep maturation, as well as the stability and the periodic instability in the individuals’ rank across time, may be interpreted to reflect the interplay among constitutional, maturational, and experiential factors.

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Sleep rhythmicity in infants: index of stress or maturation

Cited by 7 publications

References 45 publications

The sleep of co‐sleeping infants when they are not co‐sleeping: Evidence that co‐sleeping is stressful

The sleep of co‐sleeping infants when they are not co‐sleeping: Evidence that co‐sleeping is stressful

Infant wake after sleep onset serves as a marker for different trajectories in cognitive development

Stability and changes in sleep regulation: A longitudinal study from 3 months to 3 years

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