Fetal response to external mechanical stimuli

Issel, E. P.

doi:10.1515/jpme.1983.11.5.232

Cited by 14 publications

(8 citation statements)

References 13 publications

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“…Similar negative results were reported by Druzin, Gratacos, Paul, Broussard, McCart, and Smith (1985) when shaking the uterus. Conversely, Issel (1983) observed in nondistressed fetuses high ratio (respectively 75 and 69% in REM and non-REM states) of transient movements HR acceleration and few state changes (6.1 and 13%, respectively, in REM and non-REM sleep episodes) in response to 5 s of forceful shaking of the fetal head by hand.…”

Section: Introductionmentioning

confidence: 81%

Fetal responsiveness to maternal passive swinging in low heart rate variability state: Effects of stimulation direction and duration

Lecanuet

Jacquet

2001

Developmental Psychobiology

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Pregnant women, carrying end of gestation fetuses (38-41 weeks gestational age) were either gently rocked in an anterior posterior plane in a rocking chair or gently swayed laterally in a garden glider. Stimulation lasted for either 5 or 26 s (R5 & R26, SW5 & SW26). Fetal heart rate (HR) (bpm) and ultrasonically detected fetal movements were recorded 26 s before and during stimulation. Heart rate data were processed two ways: (a) ANOVAs performed on average values for each group and (b) comparisons of the proportion of subjects in each group showing HR accelerative change (AC), HR decelerative change (DC), or no change (NC) using chi2 statistics. HR direction and amplitude of changes were determined with the help of a conservative procedure previously developed and fitted to multidirectional HR responses (Lecanuet, Granier-Deferre, Jacquet, & Busnel, 1992). Results of ANOVAs indicated that a 26-s rocking stimulation induced a significant average HR acceleration (4.53 bpm) compared to a nonstimulated (control) group. Five seconds of rocking had a weaker, but still significant, effect on HR acceleration, but the two swaying conditions did not reliably affect either the HR or behavioral measures. Processing data nonparametrically confirmed that R26 stimulation evoked mostly AC (72%) and identified a gradual decrement of AC and DC percentage responses from Group R5, SW26 to Group SW5 while NC percentages raised. Hypotheses concerning the target sense activated by this stimulation were considered in relation to responses to auditory stimuli.

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Section: Introductionmentioning

confidence: 81%

Fetal responsiveness to maternal passive swinging in low heart rate variability state: Effects of stimulation direction and duration

Lecanuet

Jacquet

2001

Developmental Psychobiology

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“…In parallel, thumb sucking is rarely observed before 15 weeks PC but becomes more frequent afterwards (Hepper, Shahidullah, & White, 1991). A pressure on the maternal abdomen can also be perceived by the fetus (from 32 to 40 weeks PC) who reacts with co-occurring heart rate changes (Bradfield, 1961;Issel, 1983;Walker, Grimwade, & Wood, 1973).…”

Section: Current Knowledge Of Newborns' Umwelt Tactile Perceptionmentioning

confidence: 99%

“…Differences between authors' choices of criteria are less easy to understand. Thus, when measuring heart rate, some authors consider that Bvariations^of five beats/min during 5 seconds can be interpreted as a response to a stimulation, while for others, Bvariations^must exceed 15 beats/min during 15 seconds to reach the same conclusion, even for sameage subjects (Aladjem, Feria, Rest, & Stojanovic, 1977;Issel, 1983;Kawakami et al, 2002;Walker et al, 1973).…”

Section: Experimental Measures and Proceduresmentioning

confidence: 99%

The human newborn’s umwelt: Unexplored pathways and perspectives

et al. 2017

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Historically, newborns, and especially premature newborns, were thought to "feel nothing." However, over the past decades, a growing body of evidence has shown that newborns are aware of their environment, but the extent and the onset of some sensory capacities remain largely unknown. The goal of this review is to update our current knowledge concerning newborns' perceptual world and how ready they are to cope with an entirely different sensory environment following birth. We aim to establish not only how and when each sensory ability arises during the pre-/postbirth period but also discuss how senses are studied. We conclude that although many studies converge to show that newborns are clearly sentient beings, much is still unknown. Further, we identify a series of internal and external factors that could explain discrepancies between studies, and we propose perspectives for future studies. Finally, through examples from animal studies, we illustrate the importance of this detailed knowledge to pursue the enhancement of newborns' daily living conditions. Indeed, this is a prerequisite for assessing the effects of the physical environment and routine procedures on newborns' welfare.

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“…Passive tactile stimuli (e.g. pressures on the maternal abdomen) can already be perceived by the fetus [11], [12], while premature and full-term newborns are known to perceive and react not only to nociceptive stimuli (e.g. heel lance; e.g.…”

Section: Introductionmentioning

confidence: 99%

Higher tactile sensitivity in preterm infants at term-equivalent age: A pilot study

André¹,

Durier²,

Beuchée

et al. 2020

PLoS ONE

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Despite a growing body of research on perinatal sensory abilities, data on the extent of tactile sensitivity and more particularly passive touch (i.e. sensitivity to a stimulation imposed on the skin) are relatively limited, and the development and processing of tactile function are still thus little known. This question is particularly of high importance for infants with atypical early development such as those born prematurely who are exposed to many sensory (including tactile) stimulations (being in a hospital setting) during a critical period of brain development and those born at early term whose birth occurs at the precise time of cortical reorganization, in particular in the sensory areas. Some parents and health-care providers have for instance reported that children born prematurely exhibit atypical (e.g. higher) sensitivity to "benign" tactile stimuli. In the present study, we hypothesized that preterm and earlyterm infants may show altered tactile sensitivity. We compared the behavioral responses around term-equivalent age of infants born either pre-term, early-term or at term to the application of a light (0.008 grams) mechanical stimulus. We found that almost all preterm infants perceive this tactile stimulus, contrarily to the two other groups of infants. This extreme tactile sensitivity may be due to experiential, maturational or more likely both processes. We also compared the tactile sensitivity of these infants to that of adults. We found that adults were irresponsive to the light mechanical stimulus. This finding opens not only new insights in understanding development of tactile processing, but also new lines of thought about the particular sensory world of premature and early-term infants and hence about the potential impact of early care practices.

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Fetal response to external mechanical stimuli

Cited by 14 publications

References 13 publications

Fetal responsiveness to maternal passive swinging in low heart rate variability state: Effects of stimulation direction and duration

Fetal responsiveness to maternal passive swinging in low heart rate variability state: Effects of stimulation direction and duration

The human newborn’s umwelt: Unexplored pathways and perspectives

Higher tactile sensitivity in preterm infants at term-equivalent age: A pilot study

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