Concurrence of mouthing movement and rapid eye movement/non-rapid eye movement phases with advance in gestation of the human fetus

Horimoto, Naoki; Koyanagi, Takashi; Nagata, Shin; Nakahara, Hiromasa; Nakano, Hitoo

doi:10.1016/0002-9378(89)90517-6

Cited by 43 publications

(19 citation statements)

References 15 publications

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“…Hiromoto et al [50] studied mouthing in fetuses from 28 weeks to term and found that random mouthing movements were observed predominantly during intervals of REM and were not related to gestational age, while reg ular mouthing concurred with the non-REM intervals and were gestational age-dependent.…”

Section: Fetal Mouthingmentioning

confidence: 99%

Development of Human Fetal Behavior: A Review

Pillai¹,

James²

1990

Fetal Diagn Ther

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Most of the movements described during the course of gestation have already emerged before 16 weeks, and the presence of diurnal variation in human fetal behavior has been demonstrated from as early as 20 weeks gestation. Up to 26 weeks quiet intervals rarely exceed 5 min. After this age quiet intervals progressively increase in duration so that behavior appears cyclically rather than randomly distributed. Increasing linkage of the state variables results in identifiable fetal behavioral states from around 36 weeks. During the last trimester fetal activities are cycle- or state-dependent, so that prolonged, and often repeated, recording of behavior is necessary before any sinister conclusions can be drawn.

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Section: Fetal Mouthingmentioning

confidence: 99%

Development of Human Fetal Behavior: A Review

Pillai¹,

James²

1990

Fetal Diagn Ther

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“…From 28 to 31 weeks of gestation, the incidence of mouthing movements is uniformly distributed within an hour, suggesting that the movements are random [18]. From 35 weeks of gestation up until term, however, highly frequent mouthing movements are observed during the NEM period.…”

Section: Ultradian Rhythmmentioning

confidence: 89%

Significance of fetal behavioral studies

Fukushima

Morokuma

Nakano

2006

The Ultrasound Review of Obstetrics & Gynecology

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Observations of fetal behavior may help clarify developmental progression of central nervous system function. Lorenz hypothesized that one can presume brain function from behavior, and we have shown this concept could be adapted to the study of human fetuses. An interesting phenomenon is the correlation of fetal micturition with onset of eye movement (EM), a period that includes rapid eye movement (REM). In contrast, micturition rarely occurs during quiet sleep in neonates: Arousal signs are typically noted beforehand. We investigated to clarify the perinatal transition in behaviors by examining the relationship between onset of EM periods and micturition in human fetuses at term and in neonates. EM, crying, and eye-open periods were observed for 6 normal term neonates until micturition occurred. In 29 term fetuses, the time lag between onset of an EM period and micturition was measured using real-time ultrasound instruments. The time lag between onset of EM and micturition in neonates was significantly different (P50.05) from the time lag for term fetuses. The frequency of micturition within 8 minutes of EM onset was significantly lower in neonates (P50.05) than in term fetuses. The relationship between onset of EM periods and micturition differs between term fetuses and neonates less than one month of age, which suggests that the neuronal relationships among brain centers for these behaviors dramatically shift during the perinatal period.

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“…This approach allows interpretation of mechanisms related to the process of development, on which the fetal eye movement depends. Horimoto et al 2) studied the human fetus with real-time ultrasonography to determine whether mouthing movement is related to advance in gestational age and whether mouthing movement is concurrent with rapid eye movement and non-rapid eye movement phases. The objective of this study was to elucidate the manifestation and ontogeny of various human functions, assessed in relation to correlative development of the central nervous system.…”

Section: Introductionmentioning

confidence: 99%

The Functional Development of Fetus Behavior in Early Pregnancy.

Tsurusaki

Tahara

1997

J Phys Ther Sci

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Abstract. The number of physical therapists treating preterm infants in NICUs is increasing. Preterm infants are by definition still essentially in the intrauterine stage. Accordingly, there are as yet few guidelines concerning physical therapy for preterm infants. In this study, the development of fetus behavior was monitored by real-time ultrasonography. A total of 50 fetuses between 8 and 18 weeks of gestation were observed in terms of the development of general movements, movements of the upper extremities, and movements of the lower extremities. Movements of the neck were subsequently analyzed in detail. Fetal movement began with quick lateral bending of the neck and trunk, and the volume and quality of movements changed considerably during the period of observation. This change is due to the progress of the central nervous system. It is commonly thought that the progress of central nervous system is completely dependent on genetic inheritance. However, this study suggests the possibility that such progress is at least partially induced by afferent impulses from the periphery. Now that physical therapy is often recommended for immature infants, the developmental process of fetus behavior needs to be more fully examined.

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Concurrence of mouthing movement and rapid eye movement/non-rapid eye movement phases with advance in gestation of the human fetus

Cited by 43 publications

References 15 publications

Development of Human Fetal Behavior: A Review

Development of Human Fetal Behavior: A Review

Significance of fetal behavioral studies

The Functional Development of Fetus Behavior in Early Pregnancy.

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